CN109750674A - It is a kind of for repairing the interlocking pile and its construction method of the pollution of sensitive boundary - Google Patents
It is a kind of for repairing the interlocking pile and its construction method of the pollution of sensitive boundary Download PDFInfo
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- CN109750674A CN109750674A CN201811645500.5A CN201811645500A CN109750674A CN 109750674 A CN109750674 A CN 109750674A CN 201811645500 A CN201811645500 A CN 201811645500A CN 109750674 A CN109750674 A CN 109750674A
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Abstract
The present invention provides a kind of for repairing the interlocking pile of sensitive boundary pollution, Extra-Deep Foundation Pit bored concrete pile and the setting of composite concrete mixing pile interval and engaged, formation building enclosure.The present invention also provides the construction methods of the interlocking pile for repairing sensitive boundary pollution, mainly include four construction procedures: determining pollution boundary and supporting position, the stirring of composite concrete mixing pile region in-situ chemical is engaged pile driving construction, mud conditioning.The present invention by bored concrete pile with composite stirring stake mutually be engaged overlap joint formed building enclosure, can effective guarantee sensitivity boundary safe construction；Polluted Soil is difficult to be effectively treated between solving the problems, such as bored concrete pile, and effectively barrier is sensitive repairs boundary pollutant level diffusive migration；The interlocking pile construction insulation time is long, goes along with sb. to guard him that effect is good, and horizontal barriering effect is good, is suitable in the limited pollution boundary progress soil remediation construction in space, work progress effect on environment is small, reliable construction quality, and low cost.
Description
Technical field
The present invention relates to a kind of for repairing the interlocking pile and its construction method of the pollution of sensitive boundary, belong to soil remediation and
Environment-friendly engineering technical field.
Background technique
Currently, China by nearly 20,000,000 hectares of the cultivated area of the heavy metal pollutions such as cadmium, arsenic, chromium, lead, accounts for about the total face in arable land
Long-pending 1/5th.Due to mankind's activity increasingly frequently, correlated activation generate poisonous and harmful substance enter soil, run up to
To a certain degree, more than the self-purification capacity of soil, lead to soil property and mass change, constitute the influence to human body and ecological environment
And harm, eventually lead to that ecological environment is unbalance and geological disaster.In conjunction with the soil remediation Treatment process and urban groundwater in China
Native environmental analysis, there is sensitive buildings or structures to concentrate for Urban Underground water and soil pollution control reparation, Contaminants Transport depth is big,
The features such as polluted space is discrete, working space is limited, combined pollution phenomenon is prominent.This to a certain extent be its prospecting,
It administers to repair and brings huge challenge.
When soil pollution depth is relatively deep (>=5m), and boundary is repaired close to sensitive targets such as construction of structures, road, rivers
When, cause reparation boundary working space limited, excavating structure has to move into reparation boundary, thereby results in and repairs boundary
There are contaminated soils to repair for partial region, will finally pollute the migration and diffusion of object.
Summary of the invention
The present invention is to solve needing Polluted Soil between the showering sensitivity boundary bored concrete pile fender post of supporting construction difficult
The problem of to repair.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of for repairing sensitive boundary pollution
Interlocking pile, it is characterised in that: Extra-Deep Foundation Pit bored concrete pile and composite concrete mixing pile including soil heterotopic reparation, deep basal pit
Go along with sb. to guard him bored concrete pile and the setting of composite concrete mixing pile interval and engaged, formation building enclosure.
Preferably, the Extra-Deep Foundation Pit bored concrete pile and composite concrete mixing pile are the cylinder pile of identical size.
Preferably, adjacent foundation pits go along with sb. to guard him the stake between stake spacing and adjacent composite concrete mixing pile between bored concrete pile
Spacing is equal.
Preferably, the radius of the Extra-Deep Foundation Pit bored concrete pile is greater than two adjacent Extra-Deep Foundation Pit bored concrete piles and complex coagulation
The 1/2 of the stake spacing of native mixing pile, and not less than between two adjacent Extra-Deep Foundation Pit bored concrete piles and the stake of composite concrete mixing pile
Away from；The radius of the composite concrete mixing pile is equal to the radius of the Extra-Deep Foundation Pit bored concrete pile.
The present invention also provides a kind of for repairing the construction method of the interlocking pile of sensitive boundary pollution, which is characterized in that
Include the following steps:
Step 1: determining pollution boundary according to on-site actual situations, formulate supporting scheme, determine composite concrete mixing pile
Construction area and Extra-Deep Foundation Pit bored concrete pile construction area, and stirred in Extra-Deep Foundation Pit bored concrete pile and composite concrete
Excavate groove in stake region；
Step 2: carrying out injection stirring construction in situ in composite concrete mixing pile construction region；
Step 3: composite concrete mixing pile, composite concrete mixing pile are poured out in composite concrete mixing pile construction region
Before initial set, the pile body of cutting composite concrete mixing pile forms occlusal crib, then pours out Extra-Deep Foundation Pit bored concrete pile, it is ensured that real
Existing Extra-Deep Foundation Pit bored concrete pile is engaged with composite concrete mixing pile.
Step 4: the mud that pollution is generated in interlocking pile work progress is handled.
Preferably, the detailed process of the step 2 are as follows: the drilling rod of mixing pile machine rotates in excavation groove first, stirs in advance
It mixes and sinks down into pollution depth；It is followed by stirring for the injection pipe connection pharmacy jar of a machine, medicament injection, stirring will be repaired by compound pump
The drilling rod rotating-spray medicament of stake machine simultaneously stirs rising；After mixing pile machine drilling rod rises to ground, mixing pile machine drilling rod is repeated
Stirring is sunk；After mixing pile machine drilling rod drops to pollution depth, repeats stirring and rise to ground, injection stirring construction in situ
It completes.
It is highly preferred that the mixing pile machine is Double shaft stirring stake machine or three axes agitating pile machine, the mixing pile machine injection pipe
Use corrosion-resistant material.
Preferably, it after the completion of step 2 construction, conserves 3~5 days, then carry out the construction of step 3.
Preferably, the detailed process of the step 3 are as follows:
Step 3.1: surveying setting-out determines working space boundary and boundary of works area, and it is flat to carry out ground to work zone
It is whole, guarantee that interlocking pile is accurately positioned, place load meets drilling machine construction requirement；
Step 3.2: according to unwrapping wire position position composite concrete mixing pile position, drilling machine in place after pore-forming, borehole cleaning
Composite concrete mixing pile is poured out after the completion；
Step 3.3: before composite concrete mixing pile initial set, in composite concrete mixing pile and Extra-Deep Foundation Pit bored concrete pile
Engagement region cutting composite concrete mixing pile pile body form occlusal crib, it is in place then to position Extra-Deep Foundation Pit bored concrete pile institute
Set, drilling machine in place after pore-forming, pour out Extra-Deep Foundation Pit bored concrete pile after the completion of borehole cleaning, the Extra-Deep Foundation Pit bored concrete pile with it is described
It is engaged groove location and forms occlusion position.
Preferably, the detailed process of the step 4 are as follows: for slurry collecting in mud scratch pool, the mud in scratch pool is logical
It crosses slush pump to deliver into pipe-line mixer, flocculant is quantitatively added into pipe-line mixer by metering pump；Mud is in pipe
It is sufficiently mixed in road mixer with flocculant after reacting, plate and frame filter press filter-press dehydration is finally pumped into, by the dirt of dehydration
Mud carries out dystopy soil remediation, and plate and frame filter press water outlet enters water treatment facilities and handles.
Compared with prior art, have provided by the present invention for the interlocking pile and its construction method of repairing sensitive boundary pollution
It is following the utility model has the advantages that
1, the present invention is mutually engaged the building enclosure that overlap joint is formed by bored concrete pile with composite stirring stake, can effective guarantee sensitivity
The safe construction on boundary；The interlocking pile construction insulation time is long, goes along with sb. to guard him that effect is good, and horizontal barriering effect is good；
2, interlocking pile of the present invention can be effectively solved the dystopy sensitivity boundary bored concrete pile fender post of supporting construction needs
Between Polluted Soil processing problem, and block contaminants outwardly cleaning ambient horizontal proliferation prevents secondary pollution；It completes
The Polluted Soil on sensitive boundary is handled while supporting construction；
3, the construction method of interlocking pile of the present invention is the construction that a kind of in-situ immobilization, showering and support system combine
Method is suitable for carrying out soil remediation construction on the limited pollution boundary in space, and work progress effect on environment is small, construction quality
Reliably, and low cost.
Detailed description of the invention
Fig. 1 is provided in this embodiment for repairing the interlocking pile structural schematic diagram of sensitive boundary pollution；
Fig. 2 is provided in this embodiment for repairing the construction method flow chart of the interlocking pile of sensitive boundary pollution；
Fig. 3 is mud conditioning flow chart；
Fig. 4 is sludge treatment process block diagram.
Specific embodiment
Present invention will be further explained below with reference to specific examples.
Fig. 1 is provided in this embodiment for repairing the interlocking pile structural schematic diagram of sensitive boundary pollution, and described is used for
The interlocking pile for repairing sensitive boundary pollution includes that soil heterotopic repairs Extra-Deep Foundation Pit bored concrete pile (B) and composite concrete stirring
Stake (A), B and A intervals are arranged and engaged, formation building enclosure.
As shown in Fig. 2, above-mentioned for repairing the construction method of the interlocking pile of sensitive boundary pollution, main includes four constructions
Step: (1) pollution boundary and supporting position are determined, (2) A region in-situ chemical stirrings, (3) are engaged pile driving construction, (4) mud
Processing, last correlation engineering acceptance(check).
Specific work progress are as follows:
One, pollution boundary and supporting position are determined；
1.1, A construction grids delimited by design requirement and put a little；
1.2, groove is excavated in A and B regions.
Two, A region in-situ chemical stirrings；
2.1, by laboratory lab scale determine restoring area use in-situ immobilization medicament type and pharmaceutical quantities, and according to
Design and construction require to remove the corresponding construction parameter of setting injection mixing plant；
2.2, injection mixing plant location and installation；
2.3, injection mixing plant connects pharmacy jar, and extemporaneous preparation meets the medicament that design and construction require；
2.4, as shown in figure 3, injection agitating device of having good positioning, drilling rod start stirring and sink, injection while stirring；Injection is stirred
Mixing equipment starts to be promoted after being drilled into predetermined depth, continues injection stirring, and drilling rod closes killer injecting pump, injection after being promoted to soil body surface
Mixing plant moves to next planning injection point, repeats the above steps.
The actual conditions of incorporation engineering contaminated sites type, injection mixing plant cooperate injection medicament type using a spray two
It stirs, two sprays two stir etc. and a variety of to repeat stirring techniques.Wherein it is noted that a spray two is stirred and referred to during drilling rod sinks not
Injection stirring, injection is stirred during drilling rod is promoted；Two sprays two, which are stirred, refers to equal injection during drilling rod sinks, promoted
Stirring.
2.5, in situ after the completion of dosing stirring construction, rehabilitating soil needs to conserve 3~5 days beginning subsequent processings.
Three, it is engaged pile driving construction；
A are plain concrete mixing pile, are belonged to by cutting stake；B are steel reinforcement cage stake.A, B are all made of full-sleeve brill
Machine construction, cuts away the concrete of adjacent A intersection, to realize occlusion.Specifically:
3.1, surveying setting-out, smooth location guarantee that interlocking pile is accurately positioned, it is ensured that drilling machine is steady, bears construction loads；
3.2, work zone carries out Land leveling, guarantees that interlocking pile is accurately positioned, and place load meets drilling machine construction work
Industry requirement；
3.3, plain concrete mixing pile (A) are poured out at the construction field (site)；
3.4, A positions are positioned according to unwrapping wire position, rear pore-forming, borehole cleaning pour out A to drilling machine after the completion in place；
3.5, before A initial sets, A pile bodies is cut and form occlusal cribs, then pour out B, it is ensured that realization is stung with A
It closes；
Specifically, before A initial sets, in A and B engagement region A formation occlusal cribs of cutting, B are then positioned
Position, drilling machine in place after pore-forming, pour out B after the completion of borehole cleaning, the B stake with it is described be engaged groove location and formed sting
Close position.
It is A as shown in Figure 1, A1, A2, A3 ..., B1, B2, B3 ... are B, pour out A1 and A2 first
Stake, then pours out B1 between A1, A2, sequentially forms A and is engaged overlap joint with B.According to the construction of above-mentioned construction
Sequence sequentially forms A and is engaged overlap joint, sequence of construction with B are as follows: A1-A2-A3-B1-B2-A4-A5-B3-B4-A6, directly
It is finished to entire interlocking pile main body construction, forms place building enclosure.
In the construction method of above-mentioned interlocking pile, the A stake with B be identical size cylinder pile；The A stake and phase
The B adjacent stake spacing are equal；Described A with the B cross sectional radius be greater than two adjacent A with B stake spacing
1/2, and not less than both stake spacing.
Four, mud conditioning；
In conjunction with Fig. 4, the mud of pollution can be generated in interlocking pile work progress, slurry collecting is in mud scratch pool, temporarily
The mud deposited in pond is delivered into pipe-line mixer by slush pump, and wadding is quantitatively added into pipe-line mixer by metering pump
Solidifying agent；Mud is sufficiently mixed in pipe-line mixer with flocculant react after, be finally pumped into plate and frame filter press filter-press dehydration,
Sludge by dehydration carries out dystopy soil remediation, and plate and frame filter press water outlet enters water treatment facilities and handles.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the method for the present invention, can also be made for those skilled in the art
Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical solution of the present invention
It is interior.
Claims (10)
1. a kind of for repairing the interlocking pile of sensitive boundary pollution, it is characterised in that: the deep basal pit including soil heterotopic reparation encloses
Bored concrete pile and composite concrete mixing pile are protected, Extra-Deep Foundation Pit bored concrete pile and composite concrete mixing pile interval are arranged and sting mutually
It closes, forms building enclosure.
2. as described in claim 1 a kind of for repairing the interlocking pile of sensitive boundary pollution, it is characterised in that: the deep basal pit
It goes along with sb. to guard him bored concrete pile and composite concrete mixing pile is the cylinder pile of identical size.
3. as described in claim 1 a kind of for repairing the interlocking pile of sensitive boundary pollution, it is characterised in that: adjacent foundation pits
The stake spacing gone along with sb. to guard him between the stake spacing and adjacent composite concrete mixing pile between bored concrete pile is equal.
4. as described in claim 1 a kind of for repairing the interlocking pile of sensitive boundary pollution, it is characterised in that: the deep basal pit
Go along with sb. to guard him bored concrete pile radius be greater than two adjacent Extra-Deep Foundation Pit bored concrete piles and composite concrete mixing pile stake spacing 1/2, and
Not less than the stake spacing of two adjacent Extra-Deep Foundation Pit bored concrete piles and composite concrete mixing pile；The composite concrete mixing pile
Radius is equal to the radius of the Extra-Deep Foundation Pit bored concrete pile.
5. as Claims 1 to 4 is described in any item a kind of for repairing the construction method of the interlocking pile of sensitive boundary pollution,
It is characterized in that, includes the following steps:
Step 1: determining pollution boundary according to on-site actual situations, formulate supporting scheme, determine applying for composite concrete mixing pile
The construction area in work area domain and Extra-Deep Foundation Pit bored concrete pile, and in Extra-Deep Foundation Pit bored concrete pile and composite concrete mixing pile institute
Groove is excavated in region；
Step 2: carrying out injection stirring construction in situ in composite concrete mixing pile construction region；
Step 3: composite concrete mixing pile, composite concrete mixing pile initial set are poured out in composite concrete mixing pile construction region
Before, the pile body of cutting composite concrete mixing pile forms occlusal crib, then pours out Extra-Deep Foundation Pit bored concrete pile, it is ensured that realizes deep
Foundation pit enclosure bored concrete pile is engaged with composite concrete mixing pile.
Step 4: the mud that pollution is generated in interlocking pile work progress is handled.
6. as claimed in claim 5 a kind of for repairing the construction method of the interlocking pile of sensitive boundary pollution, it is characterised in that:
The detailed process of the step 2 are as follows: the drilling rod of mixing pile machine rotates in excavation groove first, and it is deep that pre- stirring sinks down into pollution
Degree；It is followed by stirring for the injection pipe connection pharmacy jar of a machine, medicament injection, the drilling rod rotation of mixing pile machine will be repaired by compound pump
Spraying medicine simultaneously stirs rising；After mixing pile machine drilling rod rises to ground, mixing pile machine drilling rod repeats stirring and sinks；It is stirring
After stake driver drilling rod drops to pollution depth, repeats stirring and rise to ground, injection stirring construction in situ is completed.
7. as claimed in claim 6 a kind of for repairing the construction method of the interlocking pile of sensitive boundary pollution, it is characterised in that:
The mixing pile machine is Double shaft stirring stake machine or three axes agitating pile machine, and the mixing pile machine injection pipe uses corrosion-resistant material.
8. as claimed in claim 5 a kind of for repairing the construction method of the interlocking pile of sensitive boundary pollution, it is characterised in that:
After the completion of step 2 construction, conserve 3~5 days, then carry out the construction of step 3.
9. as claimed in claim 5 a kind of for repairing the construction method of the interlocking pile of sensitive boundary pollution, it is characterised in that:
The detailed process of the step 3 are as follows:
Step 3.1: surveying setting-out determines working space boundary and boundary of works area, and carries out Land leveling to work zone, protects
It demonstrate,proves interlocking pile to be accurately positioned, place load meets drilling machine construction requirement；
Step 3.2: positioning composite concrete mixing pile position according to unwrapping wire position, drilling machine in place complete by rear pore-forming, borehole cleaning
After pour out composite concrete mixing pile；
Step 3.3: before the initial set of composite concrete mixing pile, in stinging for composite concrete mixing pile and Extra-Deep Foundation Pit bored concrete pile
It closes region cutting composite concrete mixing pile pile body and forms occlusal crib, then position Extra-Deep Foundation Pit bored concrete pile position, bore
Rear pore-forming, borehole cleaning pour out Extra-Deep Foundation Pit bored concrete pile after the completion to machine in place, and the Extra-Deep Foundation Pit bored concrete pile is engaged with described
Groove location forms occlusion position.
10. as claimed in claim 5 a kind of for repairing the construction method of the interlocking pile of sensitive boundary pollution, feature exists
In: the detailed process of the step 4 are as follows: in mud scratch pool, the mud in scratch pool is conveyed slurry collecting by slush pump
Into in pipe-line mixer, flocculant is quantitatively added into pipe-line mixer by metering pump；Mud in pipe-line mixer with
After flocculant is sufficiently mixed reaction, it is finally pumped into plate and frame filter press filter-press dehydration, the sludge by dehydration carries out dystopy soil
Earth reparation, plate and frame filter press water outlet enter water treatment facilities and handle.
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| CN111395349A (en) * | 2020-03-24 | 2020-07-10 | 广东中科碧城环境技术有限公司 | Method for cleaning and digging polluted soil at site boundary |
| CN112302057A (en) * | 2020-09-30 | 2021-02-02 | 南京格洛特环境工程股份有限公司 | Construction method for integral separation of polluted land |
| CN114226424A (en) * | 2021-11-29 | 2022-03-25 | 辽宁中博生态环境技术有限公司 | Method for dredging and disposing volatile organic compound contaminated soil |
| CN115026116A (en) * | 2022-06-08 | 2022-09-09 | 上海市政工程设计研究总院（集团）有限公司 | Heavy metal pollution cohesive soil repair system |
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Cited By (4)
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Application publication date: 20190514 |