CN104612128B - Vacuum preloading reinforcement construction method applicable to underwater silt environment - Google Patents
Vacuum preloading reinforcement construction method applicable to underwater silt environment Download PDFInfo
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- CN104612128B CN104612128B CN201410748501.8A CN201410748501A CN104612128B CN 104612128 B CN104612128 B CN 104612128B CN 201410748501 A CN201410748501 A CN 201410748501A CN 104612128 B CN104612128 B CN 104612128B
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- 238000010276 construction Methods 0.000 title claims abstract description 58
- 230000002787 reinforcement Effects 0.000 title abstract description 7
- 239000004576 sand Substances 0.000 claims abstract description 69
- 238000011049 filling Methods 0.000 claims abstract description 39
- 230000003014 reinforcing Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000011068 load Methods 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims abstract description 4
- 239000004746 geotextile Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000005516 engineering process Methods 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000010802 sludge Substances 0.000 claims description 11
- 239000004570 mortar (masonry) Substances 0.000 claims description 8
- 239000000969 carrier Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000002965 rope Substances 0.000 claims description 6
- 230000002093 peripheral Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 230000000875 corresponding Effects 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 238000009958 sewing Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 abstract description 9
- 239000004575 stone Substances 0.000 abstract description 7
- 238000004880 explosion Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract 3
- 238000007599 discharging Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 7
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000008207 working material Substances 0.000 description 1
- 239000002759 woven fabric 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
- E02D3/103—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by installing wick drains or sand bags
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0053—Production methods using suction or vacuum techniques
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0085—Geotextiles
Abstract
The invention discloses a vacuum preloading reinforcement construction method applicable to an underwater silt environment. The vacuum preloading reinforcement construction method includes the following steps that a first layer of sand cover soft mattress is laid; plugboard construction is conducted; a level discharge pipe line is laid; a second layer of sand cover soft mattress is laid; geo-nonwoven cloth and a sealing membrane are laid; around reinforcement area sealing system construction is conducted; vacuumizing is conducted until dead load is finished. The vacuum preloading reinforcement construction method applicable to the underwater silt environment effectively solves the related problems encountered in engineering constructions of an inland river, an intertidal belt and an abyssal region, such as large excavation workload, a long construction period and high building cost of projects in an underwater excavation work and a bank slope treatment project of a long-piled wharf, large using amount of stones, a long construction period and high building cost of projects in reinforcing breakwater foundation construction adopting methods of overwater throwing-filling rock blocks, land pushing throwing-filling breakwater core rocks and explosion discharging slit backfilling rock blocks, and large excavation and filling amount in a traditional replacement method.
Description
Technical field
The present invention relates to the foundation treatment technology neck of the fixed buildings such as inland river engineering, port engineering, reclamation engineering
Domain, and in particular to the engineering technology of the reinforced soft soil ground such as cruiseway, coastal Intertidal zone, seabed.
Background technology
According to《National cruiseway is planned with layout of port》(2007-2020), inland river high-grade waterway and major port
To be the emphasis that following a period of time inland river is built.In addition, country also it is intensive given an written reply Tianjin, Hebei, Liaoning, Jiangsu, Zhejiang,
The marine functional zoning of 8 provinces and cities such as Fujian, Shandong, Guangxi, plans to the year two thousand twenty, Hebei, Tianjin, Jiangsu, Zhejiang, Guangdong and other places
The reclaiming land around sea gross area is more than 3000 square kilometres.Therefore, inland river and coastal beach are further developed, especially, coastal
Harbour and transport hub are built also will constantly to deep-water developments.
At present, inland river, Intertidal zone and abysmal area engineering construction is mainly concerned with the difficult problem of following several respects：
(1) underwater excavation engineering
As port construction is limited by duration, construction site, to compared with the range of gradient slope, the underwater sludge that is not reinforced
When being excavated, tend to landslide.At present, conventional processing method is that first backfill forms land-based area accordingly, then, is adopted
Combined vacuum and surcharge preloading is reinforced, and finally excavates bank slope again, although so ensure that the stability in bank slope digging process, work
Phase is longer, and construction costs is higher.
(2) the bank processing engineering of long piled wharf
During the backfill construction of long piled wharf shore approach structure, the displacement that bank slope is produced often results in several campsheds, beam, plate change after harbour
Stake, when situation is serious, can be squeezed off by shape, problems of crack, so that dock structure is destroyed, cause huge economic damage
Lose.At present, conventional processing method is first to carry out backfill to form land-based area accordingly, then ground is entered using land foundation treatment technology
Row is reinforced, and is finally excavated to the absolute altitude of design requirement again.Obviously, the method digging up and filling in workload is very big, and the construction period is very long, and
Silt is squeezed to extra large side easily during backfill and causes environmental pollution.
(3) levee construction
The ground poor for lower sleeping soil layer engineering characteristic, breakwater are generally required using sloping breakwater form, its construction party
Method is to backfill block stone, the law technology difficulty using fill block stone throwing waterborne, land propelling method throwing dike cardiolith or explosion pressing mud method
Greatly, building stones consumption is big, long in time limit, and construction cost is high.
(4) altering fill
For traditional cushion is constructed, the excavation and filling amount of mud is big, and can cause ecological environmental pollution, it is also possible to sea
Aquaculture is brought and is had a strong impact on.
The content of the invention
The purpose of the present invention aims to provide a kind of construction method, for extra large (river, lake) bottom, Intertidal zone have it is certain thickness
The basement process of mud is reinforced and can reduce construction cost and reduction of erection time.
To achieve these goals, present invention employs technical scheme below：It is a kind of suitable for the true of underwater sludge environment
Empty pre-press reinforcing construction method, is constructed successively as follows：
(1) removing region surface to be reinforced affects the debris of construction operation；
(2) adopt technology laying ground floor sand is arranged under water by soft raft；
(3) plate construction is carried out using board plug device waterborne, the demolished ground floor software of the board plug device waterborne is drained
Into plugging draining board operation；
(4), after assembling the horizontal drainage pipeline being formed by connecting by arm and supervisor by land, operation is arranged under water,
Draining board wrench is connected with horizontal drainage pipeline；
(5) using arrange under water technology lay second layer sand by soft raft, make horizontal drainage pipeline be folded in ground floor and
Second layer sand is by between soft raft；
(6) geotechnological non-woven fabrics and diaphragm seal are laid under water successively；
(7) carry out reinforcing area peripheral sealing system construction；
(8) supervisor of horizontal drain pipe in step 4 is connected with vaccum-pumping equipment by membrane joint；
(9) it is evacuated to dead load to terminate；
The sand is integral from the sequential connection splicing of vertical and horizontal respectively by multiple sand filling bags by soft raft and fills
There is mortar, the sand filling bag is formed using the sewing of upper and lower two-layer geosynthetics, between upper and lower two-layer geosynthetics
Arrange multiple longitudinal subdivision walls evenly and at intervals sand filling bag inner chamber is separated into multiple longitudinal compartments；In upper strata earth working material
Spaced surface equably arranges multiple filling cuffs；Multiple draw rings are uniformly arranged in sand filling bag periphery.
The longitudinally spaced of upper strata geosynthetics surface is equably provided with a plurality of long reinforcement equal with longitudinal length
Band, while its lateral separation is equably provided with a plurality of short reinforced bands equal with lateral length.
The technology of arranging under water is comprised the following steps：
(A) Working Ships are in place；
(B) sand carrier abuts Working Ships；
(C) measure mud face elevation；
(D) prefabricated is involved on the cylinder of Working Ships by the sand pocket bag that multiple sand filling bags are spliced；
(E) along laying direction successively in corresponding filling cuff insertion sandstone charging pipe, and by slush pump by the mortar being stirred
Conveying is filled in sand filling bag；
(F) sand filling bag is sunk down into into riverbed successively along laying direction；
(G) charge and finish, releasing is bag rope；
(H) other width sand quilts are laid successively by (A)～(G).
The mortar for filling is more than 10 using infiltration coefficient-3The fine sand or medium coarse sand of cm/s, particle diameter are less than
The sticky content of 0.005mm is less than 3%, and particle diameter is more than 95% more than the content of 0.1mm, and filling thickness is 0.6m.
The non-woven geotextile of laying under water of the step (6) and diaphragm seal are completed using water-bed rolling paving construction technology, water-bed
Rolling paving construction technology includes following constructing operation step：
(A) Working Ships are in place；
(B) surveying and locating；
(C) the first width non-woven geotextile and the first width diaphragm seal are sewed up；
(D) cylinder that the first width non-woven geotextile and the first width diaphragm seal is wound on Working Ships is simultaneously transported to design
Arrange position；
(E) non-woven geotextile and diaphragm seal together sink down into second layer sand by soft raft surface and anchor with by winding drum
Gu；
(F) non-woven geotextile and diaphragm seal both sides are connected to into the capstan on tractor tug；
(G) tractor tug is in place；
(H) tractor tug rolling paving non-woven geotextile and diaphragm seal；
(I) the first width non-woven geotextile and the first width diaphragm seal rolling paving complete；
(J) other width non-woven geotextiles and diaphragm seal are laid successively by (A)～(I).
The peripheral sealing system construction of the step (7) is to insert in mud extremely the diaphragm seal at zone boundary to be reinforced
Few 1m, or envelope wall of constructing at zone boundary to be reinforced.
The horizontal drainage pipeline adopts soft chimney filter, soft chimney filter even tube wall to lay the filter opening that aperture is 8mm, wrap up in outward
Draining board filters mould, the vertical or horizontal laying of soft chimney filter, and constitutes closed-loop path.
The related difficult problem that the present invention is run in can efficiently solving inland river, Intertidal zone and abysmal area engineering construction, such as under water
Big workload, construction period length and construction costs are excavated in the bank processing engineering of excavation project and long piled wharf high；Using
The methods such as fill block stone throwing waterborne, land propelling method throwing dike cardiolith or explosion pressing mud method backfill block stone are reinforced breakwater basis and are applied
In man-hour, building stones consumption is big, long in time limit and construction cost is high；When traditional cushion is constructed, mud excavation and filling amount is big.
It is for the Soft Grounds such as cruiseway, coastal Intertidal zone, seabed, of the invention with existing vacuum preloading
Technology is compared, and is had the advantage that：
(1) underwater sludge in the range of slope is first reinforced using underwater vacuum precompression technology, soil strength can be made
Improve, it is to avoid Slope Failure during underwater excavation, so that the duration shortens, construction costs is reduced；
(2) underwater sludge in the range of long piled wharf bank slope is first reinforced using underwater vacuum precompression technology, makes soil
Body intensity carries out piling construction after improving to a certain extent again, can so avoid " during shore approach structure backfill construction, bank slope generation
Displacement cause several campsheds after harbour, beam, plate deformation, problems of crack ", furthermore, it is possible to reduce substantial amounts of excavated volume, do not have back
Operation is filled out, shortens the construction period.In addition, the cushion cap width of long piled wharf can also be reduced using underwater vacuum precompression technology, increase
Plus the usable floor area in back-up land stockyard, the service efficiency in stockyard is improved, and then changes the version of harbour.
(3) using underwater vacuum precompression technology to soft soil foundation is reinforced under water after, the intensity of foundation soil obtains larger
Improve, therefore, breakwater cross dimensions can be suitably reduced on the basis of breakwater base stabilization is ensured, while, it is contemplated that
Foundation soil can complete most of sedimentation during vacuum preloading under water, can efficiently control breakwater levee crown absolute altitude.In addition,
Also contemplate for levee construction is carried out in evacuation in levee construction, the construction period can be shortened.
(4) country is gradually strict to maritime environment Environmental capacity in recent years, can using underwater vacuum precompression construction technology
The excavation and filling amount of mud is reduced, environmental pollution is reduced.
Description of the drawings
Fig. 1 is single width sand pocket organigram.
Fig. 2 is non-woven fabrics and the water-bed rolling paving construction floor map of geotextiles.
Fig. 3 is to lay sand under water by soft raft schematic diagram.
Fig. 4 is underwater vacuum precompression construction sectional schematic diagram.
Wherein：1- geosynthetics；2- longitudinal directions compartment；The long reinforced bands of 3-；The short reinforced bands of 4-；5- fills cuff；6- draws
Ring；7- tractor tugs；8- capstan winches；9- anchors；10- drawstrings；11- cylinders；12- non-woven geotextiles and diaphragm seal；13- sand carriers；14- spreads
Row's ship；15- ropes；16- Ka Liang and cylinder；17- sand is by soft raft；18- positioning rolls；19- treats reinforcing flexible foundation；20- draining boards；
The ground floor sand that 21- is completed is by soft raft；22- horizontal drainage pipelines；The second layer sand that 23- is completed is by soft raft；What 24- was completed
Non-woven geotextile and diaphragm seal；25- area peripheral edge sealing systems to be reinforced；26- special vaccum-pumping equipments under water；27- waters；
100- sand is laid direction by soft raft.
Specific implementation method
The present invention is implemented according to the following steps：
(1) debris for treating that 19 surface of reinforcing flexible foundation affects construction operation are removed, and is flattened；Debris herein are finger tips
Sharp, block object.
Tractor tug 7, sand carrier 13 and Working Ships 14 are positioned by GPS system.
(2) prepare material and make sand by soft raft 17, the sand by soft raft by multiple sand filling bags respectively from longitudinal direction and
Laterally sequential connection splicing is integral and is filled with mortar.Sand filling bag is formed using the sewing of upper and lower two-layer geosynthetics 1,
Multiple longitudinal subdivision walls are set evenly and at intervals between two-layer geosynthetics 1 up and down many so that sand filling bag inner chamber to be separated into
Individual longitudinal compartment 2；On upper strata, geotechnique's material surface arranges multiple filling cuffs 5 evenly and at intervals；It is uniform in sand filling bag periphery
Multiple draw rings 6 are set.Geosynthetics 1 can be using the braided geotextile of high intensity reinforcement type, woven fabric, pin compound die
Bag, or other high intensity, anti-filter and water penetration energy consumption material.On upper strata geosynthetics surface, along sand pocket laterally, by
Away from 1m, the long reinforced bands 3 of setting, a width of 70mm equal with sand pocket longitudinal length；On upper strata geosynthetics surface, along per pass
Geotextiles piece, by spacing 3m, arrange that length is equal with sand pocket lateral length, a width of 140mm short reinforced bands 4, and perpendicular to
Piece is sewed.
By sand carrier 13 and Working Ships 14, rope 15, Ka Liang and cylinder 16, positioning rolls 18, ground floor sand quilt is laid
Soft raft 17.
Concrete operations are as follows：
(A) position of Working Ships is corrected by GPS positioning system；
(B) sand carrier 13 abuts Working Ships 14；
(C) measure mud face elevation；
(D) by the prefabricated cylinder that Working Ships 14 are involved in by the first width sand pocket bag that multiple sand filling bags are spliced
On 16；
(E) along laying direction successively in corresponding filling cuff insertion sandstone charging pipe, and by slush pump by the mortar being stirred
Conveying is filled in sand filling bag；Mortar is more than 10 by infiltration coefficient-3The fine sand of cm/s or medium coarse sand stirring are mixed, its
In, particle diameter is less than 3% less than the sticky content of 0.005mm, and particle diameter is more than 95% more than the content of 0.1mm.Filling thickness is
0.6m。
(F) sand filling bag is sunk down into into riverbed successively along laying direction；
(G) charge and finish, releasing is bag rope；
(H) other width sand quilts are laid successively by (A)～(G).
Sand is laid inspection of quality.
(3) plate construction is carried out using board plug device waterborne；
Board plug device waterborne selects flashboard boat waterborne, containing board plug device, Water positioner and computer detecting system, its
In, the end of board plug device is provided with plate cutting mechanism.The demolished ground floor software of board plug device is arranged and completes to plug draining board operation.
(4), after assembling the horizontal drainage pipeline being formed by connecting by arm and supervisor by land, operation is arranged under water；
Draining board wrench is connected with horizontal drainage pipeline.
(5) adopt technology laying second layer sand is arranged under water by soft raft；Make horizontal drainage pipeline be folded in ground floor and
Second layer sand is by between soft raft.
(6) non-woven geotextile and diaphragm seal 12 are made, by tractor tug whole system (by tractor tug 7；Capstan winch 8；Anchor 9；Draw
Rope 10；Cylinder 11 is constituted) paving non-woven geotextile and diaphragm seal 12 are rolled under water；Mainly construction process is：
(A) position of Working Ships is corrected by GPS positioning system；
(B) surveying and locating；
(C) the first width non-woven geotextile and the first width diaphragm seal are sewed up；
(D) the first width non-woven geotextile and the first width diaphragm seal winding drum, transport；
(E) non-woven geotextile and diaphragm seal together sink down into second layer sand by soft raft surface and anchor with by winding drum
Gu；
(F) non-woven geotextile and diaphragm seal both sides are connected to into the capstan on tractor tug；
(G) tractor tug is in place；
(H) tractor tug rolling paving non-woven geotextile and diaphragm seal；
(I) the first width non-woven geotextile and the first width diaphragm seal rolling paving complete；
(J) other width non-woven geotextiles and diaphragm seal are laid successively by (A)～(I)；
(K) sand is laid inspection of quality.
(7) carry out treating the sealing system construction of 19 periphery of reinforcing flexible foundation, be by the diaphragm seal at zone boundary to be reinforced
At least 1m in insertion mud, or envelope wall of constructing at zone boundary to be reinforced；
(8) special vaccum-pumping equipment 26 under water is laid, the supervisor of horizontal drain pipe in step 4 is passed through membrane joint and taken out
Vacuum equipment connects；
(9) it is evacuated to dead load to terminate, the dead load refers to the vacuum preloading duration of design requirement.
Claims (6)
1. a kind of vacuum pre-press reinforcing construction method suitable for underwater sludge environment, it is characterised in that apply as follows successively
Work：
(1) removing region surface to be reinforced affects the debris of construction operation；
(2) adopt technology laying ground floor sand is arranged under water by soft raft；
(3) plate construction is carried out using board plug device waterborne, the board plug device waterborne is exposed ground floor soft raft and completes to plug
Draining board operation；
(4), after assembling the horizontal drainage pipeline being formed by connecting by arm and supervisor by land, operation is arranged under water, will row
Water plate wrench is connected with horizontal drainage pipeline；
(5) using technology laying second layer sand is arranged under water by soft raft, horizontal drainage pipeline is made to be folded in ground floor and second
Layer sand is by between soft raft；
(6) geotechnological non-woven fabrics and diaphragm seal are laid under water successively；
(7) carry out reinforcing area peripheral sealing system construction；
(8) supervisor of horizontal drain pipe in step 4 is connected with vaccum-pumping equipment by membrane joint；
(9) it is evacuated to dead load to terminate；
The sand is integral from the sequential connection splicing of vertical and horizontal respectively by multiple sand filling bags by soft raft and is filled with sand
Slurry, the sand filling bag are formed using the sewing of upper and lower two-layer geosynthetics, are spaced between upper and lower two-layer geosynthetics
Equably arrange multiple longitudinal subdivision walls sand filling bag inner chamber is separated into multiple longitudinal compartments；In upper strata geotechnique's material surface
Multiple filling cuffs are set evenly and at intervals；Multiple draw rings are uniformly arranged in sand filling bag periphery.
2. the vacuum pre-press reinforcing construction method suitable for underwater sludge environment according to claim 1, it is characterised in that：
The technology of arranging under water is comprised the following steps：
(A) Working Ships are in place；
(B) sand carrier abuts Working Ships；
(C) measure mud face elevation；
(D) prefabricated is involved on the cylinder of Working Ships by the sand pocket bag that multiple sand filling bags are spliced；
(E) along laying direction successively in corresponding filling cuff insertion sandstone charging pipe, and the mortar being stirred is conveyed by slush pump
It is filled in sand filling bag；
(F) sand filling bag is sunk down into into riverbed successively along laying direction；
(G) charge and finish, releasing is bag rope；
(H) other width sand quilts are laid successively by (A)～(G).
3. the vacuum pre-press reinforcing construction method suitable for underwater sludge environment according to claim 2, it is characterised in that：
The mortar for filling is more than 10 using infiltration coefficient-3The fine sand or medium coarse sand of cm/s, particle diameter are less than
The sticky content of 0.005mm is less than 3%, and particle diameter is more than 95% more than the content of 0.1mm, and filling thickness is 0.6m.
4. the vacuum pre-press reinforcing construction method suitable for underwater sludge environment according to claim 1, it is characterised in that：
The non-woven geotextile of laying under water of the step (6) and diaphragm seal are completed using water-bed rolling paving construction technology, water-bed rolling paving construction
Technique includes following constructing operation step：
(A) Working Ships are in place；
(B) surveying and locating；
(C) the first width non-woven geotextile and the first width diaphragm seal are sewed up；
(D) cylinder that the first width non-woven geotextile and the first width diaphragm seal is wound on Working Ships transporting to design is arranged
Position；
(E) non-woven geotextile and diaphragm seal with together sunk down into second layer sand by soft raft surface and anchored by winding drum；
(F) non-woven geotextile and diaphragm seal both sides are connected to into the capstan on tractor tug；
(G) tractor tug is in place；
(H) tractor tug rolling paving non-woven geotextile and diaphragm seal；
(I) the first width non-woven geotextile and the first width diaphragm seal rolling paving complete；
(J) other width non-woven geotextiles and diaphragm seal are laid successively by (A)～(I).
5. the vacuum pre-press reinforcing construction method suitable for underwater sludge environment according to claim 1, it is characterised in that：
The peripheral sealing system construction of the step (7) is that the diaphragm seal at zone boundary to be reinforced is inserted at least 1m in mud, or
Person constructs at the zone boundary to be reinforced envelope wall.
6. the vacuum pre-press reinforcing construction method suitable for underwater sludge environment according to claim 1, it is characterised in that：
The horizontal drainage pipeline adopts soft chimney filter, soft chimney filter even tube wall to lay the filter opening that aperture is 8mm, wrap up in outward draining board filter
Film, the vertical or horizontal laying of soft chimney filter, and constitute closed-loop path.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748501.8A CN104612128B (en) | 2014-12-09 | 2014-12-09 | Vacuum preloading reinforcement construction method applicable to underwater silt environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748501.8A CN104612128B (en) | 2014-12-09 | 2014-12-09 | Vacuum preloading reinforcement construction method applicable to underwater silt environment |
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| Publication Number | Publication Date |
|---|---|
| CN104612128A CN104612128A (en) | 2015-05-13 |
| CN104612128B true CN104612128B (en) | 2017-04-12 |
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| CN201410748501.8A Active CN104612128B (en) | 2014-12-09 | 2014-12-09 | Vacuum preloading reinforcement construction method applicable to underwater silt environment |
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| CN106498923A (en) * | 2016-12-15 | 2017-03-15 | 邓亚光 | Consolidation sand filling bag composite pile system and its construction method from after draining |
| CN111735904B (en) * | 2020-06-10 | 2022-05-17 | 中交四航工程研究院有限公司 | Method for detecting content of chloride ions in hardened concrete in newly-built engineering |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100750310B1 (en) * | 2006-01-27 | 2007-08-17 | 서울중공업(주) | Improvement method for soft ground |
| CN101033614A (en) * | 2006-03-10 | 2007-09-12 | 天津港湾工程研究所 | Underwater vacuum prepressing reinforcement soft base technique method |
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| CN103046553A (en) * | 2013-01-30 | 2013-04-17 | 安徽水利开发股份有限公司 | Method for carrying out deepwater laying on large-volume reinforced mud-filling tubular bags by using geotextiles-laying vessels |
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| KR100750310B1 (en) * | 2006-01-27 | 2007-08-17 | 서울중공업(주) | Improvement method for soft ground |
| CN101033614A (en) * | 2006-03-10 | 2007-09-12 | 天津港湾工程研究所 | Underwater vacuum prepressing reinforcement soft base technique method |
| CN201024417Y (en) * | 2007-04-13 | 2008-02-20 | 中交四航工程研究院有限公司 | Super soft soil shallow quick reinforcing system |
| CN101718089A (en) * | 2009-11-26 | 2010-06-02 | 中交第一航务工程勘察设计院有限公司 | Combined vacuum preloading method foundation treatment construction method |
| CN102127908A (en) * | 2011-04-18 | 2011-07-20 | 中交四航工程研究院有限公司 | Method for quickly reinforcing ultra-soft soil foundation by using bagged sand cushion |
| CN103046553A (en) * | 2013-01-30 | 2013-04-17 | 安徽水利开发股份有限公司 | Method for carrying out deepwater laying on large-volume reinforced mud-filling tubular bags by using geotextiles-laying vessels |
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