CN109098175A - A kind of tri-axes deep mixing pile construction method - Google Patents

A kind of tri-axes deep mixing pile construction method Download PDF

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Publication number
CN109098175A
CN109098175A CN201810953461.9A CN201810953461A CN109098175A CN 109098175 A CN109098175 A CN 109098175A CN 201810953461 A CN201810953461 A CN 201810953461A CN 109098175 A CN109098175 A CN 109098175A
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China
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tri
construction
cement
pile
stake
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CN201810953461.9A
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Inventor
王云鹏
潘书才
郁邦永
王文娟
王士华
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JIANGSU XINGSHA CONSTRUCTION ENGINEERING GROUP Co Ltd
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JIANGSU XINGSHA CONSTRUCTION ENGINEERING GROUP Co Ltd
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Priority to CN201810953461.9A priority Critical patent/CN109098175A/en
Publication of CN109098175A publication Critical patent/CN109098175A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil

Abstract

The present invention proposes a kind of tri-axes deep mixing pile construction method, and using primary sinking whitewashing stirring, the primary construction technology for promoting stirring one hole pile of socket of whitewashing designs a whole set of construction process of tri-axes deep mixing stake, securely and reliably, construction efficiency is high;It is bored by repeating set, to guarantee the continuity of wall and the construction quality of connector;Thicker region is filled out miscellaneous, the mode of compaction grouting is taken to be attached tri-axes deep mixing stake, the thicker region of silty clay takes the mode of rotary churning pile to be attached tri-axes deep mixing stake, solves the problems, such as not overlapping or overlap because of overlong time bad;Line clogging occurs, is handled by termination of pumping, and stirring drill tool above mentioned and sinking 1.0m after continue slip casting, wait 10~20 seconds and restore to be lifted up stirring, occur to prevent broken pile;Cement flow solves leakage phenomenon by the leak stopping of drainage tube accelerated cement, welding steel plate leak stopping;Depending on plugging effect, two fluid grouting or polyamine ester foaming leak stopping can be used after enclosure wall when necessary.

Description

A kind of tri-axes deep mixing pile construction method
Technical field
The present invention relates to the realm of building construction, and in particular to a kind of tri-axes deep mixing pile construction method.
Background technique
Tri-axes deep mixing pile driving construction is one more important in current construction, during three axis depth pile driving constructions, by Construction is bored in carrying out set, easily the construction quality of wall and connector is had some impact on, meanwhile, in stake build process, need Mixing speed that will be slower can not be overlapped or be overlapped caused by easily causing because of overlong time and is bad to guarantee to overlap quality.Into One step, during three axis depth pile driving constructions, need to have certain guarantee to the intensity and uniformity of pile body, also, in three axis It stirs during pile driving construction deeply, the problems such as mortar isolation, the disconnected slurry of stock line blocking, leakage easily occurs.
Summary of the invention
The present invention proposes a kind of tri-axes deep mixing pile construction method, using primary sinking whitewashing stirring, is once promoted to whitewash and be stirred Mix the construction technology of one hole pile of socket.
A kind of tri-axes deep mixing pile construction method of the present invention, includes the following steps:
Step 1: surveying setting-out
According to design coordinate basis point, positioning is carried out according to design drawing and elevation pilot measurement works, and carry out permanent and temporary sign; Measuring technique review is carried out after setting-out alignment, confirms errorless rear progress tri-axes deep mixing pile driving construction;
Step 2: excavating groove
According to foundation pit enclosure inner edge control line, hand excavation's groove is cooperated using 1.0m3 digging machine, groove dimensions are deeper than three axis of design It is 0.2 meter wide to stir a width, soil should be handled in time more than excavation groove, to guarantee tri-axes deep mixing stake normal construction;
Step 3: the positioning of three axes agitating pile hole location
Three axis blender diameters are 850mm, and three axis center spacing are 1200mm, are welded mark on positioning fashioned iron according to this size Note checks bit size, stake diameter Wu Cha≤10mm before constructing as the foundation of mixing pile positioning, displacement;
Step 4: sequence of construction
Tri-axes deep mixing pile driving construction is carried out according to certain sequence, is covered and is bored by the repetition at interval, to guarantee the continuity of wall and connect The verticality correction of the construction quality of head, the overlap joint and construction equipment of cement mixing pile guarantees by one hole of socket, to reach To the effect of sealing;
Step 5: stake machine is in place
The case where unified command stake machine is in place, sees upper and lower, left and right various aspects clearly before mobile, discovery barrier should be removed in time, Positioning scenarios and timely correction are conscientiously checked after stake machine is mobile, pile position deviation is not more than 50mm;After position of p ile machine, with random Dipmeter correct stake machine guide rod verticality, deviation should be less than 1/200;
Step 6: mixing speed and grout injection control
(1) three axis cement mixing pile is sinking and should all inject cement grout in lifting process, while according to Different Strata with after The adjustment of the factors such as platform slurries conveying capacity controls sinking and promotes speed;To ensure to stir evenly, according to design requirement and related Technical data regulation, subsidence velocity control within the scope of 0.5m/min~1m/min, promote speed control in 1m/min~2m/ Within the scope of min, keep uniformly sinking or being promoted;Stake bottom absolute altitude Wu Cha≤+ 50mm, carries out the original record of each pile;Between stake Lapping time is no more than 24 hours, if overtime for some reason, must slow down mixing speed in lapping construction and guarantee overlap joint quality;Because of the time It is too long to overlap or overlap bad, thicker region should be filled out miscellaneous, takes the mode of compaction grouting according to field geology conditions Tri-axes deep mixing stake is attached, the thicker region of silty clay takes the mode of rotary churning pile to be attached tri-axes deep mixing stake, Depth is with tri-axes deep mixing stake, to guarantee the continuous closing of water-stop curtain;
(2) cement grout and slurries injection are prepared
It builds at the construction field (site) and mixes slurry operation platform, platform nearby builds cement bunker;Before spudding in mix slurry staff carry out friendship Basic skill or training makees;The preparation that slurries should be carried out before booting, according to the soil property situation of design requirement and place, tri-axes deep mixing stake controls cement The ratio of mud of slurries is 1.5~2.0, and cement uses P.O42.5 class g cement, and cement mixed ratio 20% mixes slurry and grouting amount with every The soil mass consolidation side of brill measure conversion, it is desirable that 28 days unconfined compressive strengths are not less than 0.8MPa, spray pressure be no more than 0.8Mpa;
Step 7: displacement soil is cleared
Blender sink and lifting process in can generate a large amount of displacement mud, therefore be equipped in construction a digging machine carry out and Shi Qingyun;
Step 8: accounting logging
Further, examination piling experiment is carried out by design requirement before large-area construction, it is main to determine the stirring of three axes agitating pile machine Subsidence velocity and stirring promote speed control range, and remain a constant speed and at the uniform velocity be promoted;Stirring should not make in hole when being promoted It generates negative pressure and causes periphery settlement of foundation, according to pile-formation process, cement grout when the velocity amplitude specifically selected passes through 3 examination piles The working flow calculating of match ratio, grouting pump determines, stirs number and mixing time it is ensured that cement mixing method pile quality.
Further, the soil body should be sufficiently stirred, and strict control drilling uniformly sinking, uniform lift speed fills undisturbed soil Divide and be crushed, is conducive to cement grout and is evenly mixed with soil;Stirring head each up and down once should spray the soil body in normal condition Slurry stirring, the soil layer big to sand content, preferably to repeat whitewashing stirring up and down primary stirring within the scope of 2 meters -3 meters of a bottom.
Further, slurries are poured into the slurry storing tank with agitating device by strainer, to prevent slurries isolation, cement grout It should strictly be made by predetermined match ratio, must be stirred to prevent mortar from isolating, before blowing 30 seconds and pour into slurry storage bucket again;It shelves for some reason Mixing slurries more than 2h or more should be used as waste pulp processing, forbid to use again.
Further, mud jacking stage stock line cannot block, and not allow to occur disconnected slurry phenomenon, and full stake palpus slip casting is uniform, Soil paste sandwich of layers must not occur.Occur line clogging, should termination of pumping immediately processing, stirring drill tool is above mentioned immediately after to be processed With can continue slip casting after sinking 1.0m, wait 10~20 seconds restore be lifted up stirring, to prevent broken pile occur.
Further, in the construction process, if because processing barrier, mechanical equipment such as badly repair, power offs at the fortuitous events generation And when causing the construction time too long, piling need to be carried out on the outside of adjacent two width stake.
Further, in Excavation Process, once discovery leakage phenomenon, immediately organizing construction, main leaking-stopping measure There are the leak stopping of drainage tube accelerated cement, welding steel plate leak stopping;Depending on plugging effect, using two fluid grouting or can gather after enclosure wall when necessary Amine ester foaming leak stopping.
Further, cement flow, grouting pressure use Mechanical course, the strict control ratio of mud, and at any time with specific gravity instrument Check the specific gravity of cement slurry.
Further, the problem of recording defect, abnormal conditions, will be present is accurate, fills in construction note, construction note in time Long a bit number, stake, cross-sectional area, the time of sinking (promotion) and depth, cement consumption, cement incorporation are had recorded in table in detail Than, the ratio of mud.
What the present invention reached has the beneficial effect that using primary sinking whitewashing stirring, primary to promote one hole of stirring socket of whitewashing The construction technology of pile designs a whole set of construction process of tri-axes deep mixing stake, and securely and reliably, construction efficiency is high;Pass through repetition Set bores, to guarantee the continuity of wall and the construction quality of connector;Thicker region is filled out miscellaneous, takes the mode pair of compaction grouting Tri-axes deep mixing stake is attached, and the thicker region of silty clay takes the mode of rotary churning pile to be attached tri-axes deep mixing stake, deep Degree with tri-axes deep mixing stake, guarantee the continuous closing of water-stop curtain, solve because overlong time can not overlap or overlap it is undesirable Problem;Slurries are poured into the slurry storing tank with agitating device by strainer, and cement grout strictly presses predetermined match ratio production, blowing Before must stir 30 seconds and pour into slurry storage bucket again, prevent slurries from isolating;Line clogging occurs, is handled by termination of pumping, and stirring is bored Mentioned on tool and sinking 1.0m after continue slip casting, wait 10~20 seconds restore be lifted up stirring, to prevent broken pile occur;Cement flow, Grouting pressure uses Mechanical course, and the strict control ratio of mud ensure that cement slurry quality;By the leak stopping of drainage tube accelerated cement, Welding steel plate leak stopping solves leakage phenomenon;Depending on plugging effect, two fluid grouting or polyamine ester foaming can be used after enclosure wall when necessary Leak stopping.
Detailed description of the invention
Fig. 1 is tri-axes deep mixing pile constructing process flow chart of the present invention.
Fig. 2 is tri-axes deep mixing pile driving construction sequence of the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawings of the specification.
A kind of tri-axes deep mixing pile construction method, it is primary to promote one hole of stirring socket of whitewashing using primary sinking whitewashing stirring The construction technology of pile, includes the following steps:
Step 1: surveying setting-out
According to design coordinate basis point, positioning is carried out according to design drawing and elevation pilot measurement works, and carry out permanent and temporary sign. It is single that measuring technique review is carried out after setting-out alignment, is submitted to management to carry out review and is checked and accepted visa.Confirm errorless rear progress tri-axes deep mixing Pile driving construction.
Step 2: excavating groove
According to foundation pit enclosure inner edge control line, using 1.0m3Digging machine cooperates hand excavation's groove, and groove dimensions are deeper than three axis of design It is 0.2 meter wide to stir a width, soil should be handled in time more than excavation groove, to guarantee tri-axes deep mixing stake normal construction, and reach civilized work Ground requirement.
Step 3: the positioning of three axes agitating pile hole location
Three axis blender diameters are 850mm, and three axis center spacing are 1200mm, are welded mark on positioning fashioned iron according to this size Note checks bit size, stake diameter Wu Cha≤10mm before constructing as the foundation of mixing pile positioning, displacement.
Step 4: sequence of construction
Tri-axes deep mixing pile driving construction is carried out by Fig. 2 sequence, and wherein dash area is to repeat set to bore, to guarantee the continuity of wall and connect The verticality correction of the construction quality of head, the overlap joint and construction equipment of cement mixing pile guarantees by one hole of socket, to reach To the effect of sealing.
It is socketed a hole construction technology and is all made of this kind of mode under normal circumstances and construct.
Step 5: stake machine is in place
(1) the case where unified command stake machine is in place, sees upper and lower, left and right various aspects clearly before mobile, discovery barrier should be clear in time It removes, conscientiously checks positioning scenarios and timely correction after stake machine is mobile.Pile position deviation is not more than 50mm.
(2) after position of p ile machine, stake machine guide rod verticality is corrected with random dipmeter, deviation should be less than 1/200.
Step 6: mixing speed and grout injection control
(1) three axis cement mixing pile is sinking and should all inject cement grout in lifting process, while according to Different Strata with after The adjustment of the factors such as platform slurries conveying capacity controls sinking and promotes speed.To ensure to stir evenly, according to design requirement and related Technical data regulation, subsidence velocity control within the scope of 0.5m/min~1m/min, promote speed control in 1m/min~2m/ Within the scope of min, keep uniformly sinking or being promoted.Stake bottom absolute altitude Wu Cha≤+ 50mm.Carry out the original record of each pile.
Lapping time is no more than 24 hours between stake, if overtime for some reason, must slow down mixing speed guarantee in lapping construction and take Connect quality.Because overlong time can not overlap or overlap bad, should place on record, and it is confirmed after, according to field geology conditions, It is miscellaneous to fill out thicker region, take the mode of compaction grouting to be attached tri-axes deep mixing stake, the thicker region of silty clay is taken The mode of rotary churning pile is attached tri-axes deep mixing stake.Depth is the same as tri-axes deep mixing stake.To guarantee the continuous closing of water-stop curtain.
(2) cement grout and slurries injection are prepared
It builds at the construction field (site) and mixes slurry operation platform, platform nearby builds 100m2Cement bunker.Before spudding in mix slurry staff do It tells somebody what one's real intentions are well work.The preparation that slurries should be carried out before booting, according to the soil property situation of design requirement and place, tri-axes deep mixing stake control The ratio of mud of cement grout is 1.5~2.0, and cement uses P.O42.5 class g cement, and cement mixed ratio 20% mixes slurry and grouting amount Measure conversion with the soil mass consolidation side of every brill, it is desirable that 28 days unconfined compressive strengths are not less than 0.8MPa, spray pressure be no more than 0.8Mpa。
The mixing slurries for shelving 2 hours or more for some reason, are handled according to waste pulp, forbid using.
Step 7: displacement soil is cleared
Blender sink and lifting process in can generate a large amount of displacement mud, therefore be equipped in construction a digging machine carry out and Shi Qingyun.
Step 8: accounting logging
It is recorded in work progress, fills in construction note table immediately, in detail, really, accurately recorded the sinking time of every pile, mention It rises the time, the parameters such as stirring depth, and reports and submits management in time.
In addition, this construction method passes through following several methods, it is ensured that pile strength and uniformity:
1) examination piling experiment is carried out by design requirement before large-area construction, it is main to determine that three axes agitating pile machine stirs lower settling velocity Degree promotes speed control range with stirring, and remains a constant speed and at the uniform velocity be promoted.Stirring should not make to generate in hole negative when being promoted Pressure causes periphery settlement of foundation, is cooperated when the velocity amplitude specifically selected passes through 3 examination piles according to pile-formation process, cement grout Working flow than, grouting pump is calculated and is determined, stirs number and mixing time it is ensured that cement mixing method pile quality.
2) soil body should be sufficiently stirred, and strict control drilling uniformly sinking, uniform lift speed keeps undisturbed soil sufficiently broken, Be conducive to cement grout to evenly mix with soil.Stirring head each up and down once should carry out whitewashing stirring to the soil body in normal condition, The soil layer big to sand content, preferably to repeat whitewashing stirring up and down primary stirring within the scope of 2 meters -3 meters of a bottom.
3) slurries are poured into the slurry storing tank with agitating device by strainer, and to prevent slurries isolation, cement grout should be stringent It is made by predetermined match ratio, must be stirred to prevent mortar from isolating, before blowing 30 seconds and pour into slurry storage bucket again.It is shelved for some reason more than 2h Above mixing slurries should be used as waste pulp processing, forbid to use again.
4) mud jacking stage stock line cannot block, and not allow to occur disconnected slurry phenomenon, and full stake palpus slip casting is uniform, must not occur Soil paste sandwich of layers.
5) line clogging occurs, it should the processing of termination of pumping immediately.Stirring drill tool is above mentioned and sunk immediately after to be processed It can continue slip casting after 1.0m, wait 10~20 seconds and restore to be lifted up stirring, to prevent broken pile generation.
6) it in the construction process, causes to apply if the fortuitous events generation due to such as badly repairing, power off because handling barrier, mechanical equipment When work overlong time, piling need to be carried out on the outside of adjacent two width stake.
7) in Excavation Process, tissue profession leak stopping group is carried out at the construction field (site) it is on duty, once discovery leakage Phenomenon, immediately organizing construction.Main leaking-stopping measure has the leak stopping of drainage tube accelerated cement, welding steel plate leak stopping;It is necessary depending on plugging effect When two fluid grouting or polyamine ester foaming leak stopping can be used after enclosure wall.
8) when encountering ground ditch or underground utilities can not construct by trends of design, in time with designing unit, owner, management Joint consultation determines solution.
9) cement flow, grouting pressure use Mechanical course, the strict control ratio of mud, and with specific gravity instrument cement check at any time The specific gravity of slurry.
10) slurries cannot isolate, and cement grout should strictly be made by predetermined match ratio, to prevent mortar from isolating, put It must be stirred before slurry 30 seconds and pour into slurry storage bucket again.
11) the problem of recording defect, exception, will be present is accurate, fills in construction note in time, remembers in detail in construction note table Long stake bit number, stake, cross-sectional area, the time of sinking (promotion) and depth, cement consumption, cement mixed ratio, the ratio of mud are recorded.
The foregoing is merely better embodiment of the invention, protection scope of the present invention is not with above embodiment Limit, as long as those of ordinary skill in the art's equivalent modification or variation made by disclosure according to the present invention, should all be included in power In the protection scope recorded in sharp claim.

Claims (9)

1. a kind of tri-axes deep mixing pile construction method, characterized by the following steps:
Step 1: surveying setting-out
According to design coordinate basis point, positioning is carried out according to design drawing and elevation pilot measurement works, and carry out permanent and temporary sign; Measuring technique review is carried out after setting-out alignment, confirms errorless rear progress tri-axes deep mixing pile driving construction;
Step 2: excavating groove
According to foundation pit enclosure inner edge control line, using 1.0m3Digging machine cooperates hand excavation's groove, and groove dimensions are deeper than three axis of design It is 0.2 meter wide to stir a width, soil should be handled in time more than excavation groove, to guarantee tri-axes deep mixing stake normal construction;
Step 3: the positioning of three axes agitating pile hole location
Three axis blender diameters are 850mm, and three axis center spacing are 1200mm, are welded mark on positioning fashioned iron according to this size Note checks bit size, stake diameter Wu Cha≤10mm before constructing as the foundation of mixing pile positioning, displacement;
Step 4: sequence of construction
Tri-axes deep mixing pile driving construction is carried out according to certain sequence, is covered and is bored by the repetition at interval, to guarantee the continuity of wall and connect The verticality correction of the construction quality of head, the overlap joint and construction equipment of cement mixing pile guarantees by one hole of socket, to reach To the effect of sealing;
Step 5: stake machine is in place
The case where unified command stake machine is in place, sees upper and lower, left and right various aspects clearly before mobile, discovery barrier should be removed in time, Positioning scenarios and timely correction are conscientiously checked after stake machine is mobile, pile position deviation is not more than 50mm;After position of p ile machine, with random Dipmeter correct stake machine guide rod verticality, deviation should be less than 1/200;
Step 6: mixing speed and grout injection control
(1) three axis cement mixing pile is sinking and should all inject cement grout in lifting process, while according to Different Strata with after The adjustment of the factors such as platform slurries conveying capacity controls sinking and promotes speed;To ensure to stir evenly, according to design requirement and related Technical data regulation, subsidence velocity control within the scope of 0.5m/min~1m/min, promote speed control in 1m/min~2m/ Within the scope of min, keep uniformly sinking or being promoted;Stake bottom absolute altitude Wu Cha≤+ 50mm, carries out the original record of each pile;Between stake Lapping time is no more than 24 hours, if overtime for some reason, must slow down mixing speed in lapping construction and guarantee overlap joint quality;Because of the time It is too long to overlap or overlap bad, thicker region should be filled out miscellaneous, takes the mode of compaction grouting according to field geology conditions Tri-axes deep mixing stake is attached, the thicker region of silty clay takes the mode of rotary churning pile to be attached tri-axes deep mixing stake, Depth is with tri-axes deep mixing stake, to guarantee the continuous closing of water-stop curtain;
(2) cement grout and slurries injection are prepared
It builds at the construction field (site) and mixes slurry operation platform, platform nearby builds cement bunker;Before spudding in mix slurry staff carry out friendship Basic skill or training makees;The preparation that slurries should be carried out before booting, according to the soil property situation of design requirement and place, tri-axes deep mixing stake controls cement The ratio of mud of slurries is 1.5~2.0, and cement uses P.O42.5 class g cement, and cement mixed ratio 20% mixes slurry and grouting amount with every The soil mass consolidation side of brill measure conversion, it is desirable that 28 days unconfined compressive strengths are not less than 0.8MPa, spray pressure be no more than 0.8Mpa;
Step 7: displacement soil is cleared
Blender sink and lifting process in can generate a large amount of displacement mud, therefore be equipped in construction a digging machine carry out and Shi Qingyun;
Step 8: accounting logging.
2. a kind of tri-axes deep mixing pile construction method according to claim 1, it is characterised in that: by setting before large-area construction Meter requires to carry out examination piling experiment, main to determine that three axes agitating pile machine stirring subsidence velocity and stirring promote speed control range, And it remains a constant speed and at the uniform velocity be promoted;Stirring should not make generation negative pressure in hole cause periphery settlement of foundation when being promoted, specific to select Velocity amplitude calculates really when passing through 3 examination piles according to the working flow of pile-formation process, cement grout match ratio, grouting pump It is fixed, number and mixing time are stirred it is ensured that cement mixing method pile quality.
3. a kind of tri-axes deep mixing pile construction method according to claim 1, it is characterised in that: the soil body should be sufficiently stirred, sternly Lattice control drilling uniformly sinking, uniform lift speed, keeps undisturbed soil sufficiently broken, is conducive to cement grout and evenly mixes with soil; Stirring head each up and down once should carry out whitewashing stirring to the soil body in normal condition, and the soil layer big to sand content is preferably stirring a bottom It is primary that whitewashing stirring is repeated within the scope of 2 meters -3 meters of portion up and down.
4. a kind of tri-axes deep mixing pile construction method according to claim 1, it is characterised in that: slurries pour into tool by strainer Have in the slurry storing tank of agitating device, to prevent slurries isolation, cement grout should strictly by predetermined match ratio make, for prevent mortar from It analyses, must be stirred 30 seconds before blowing and pour into slurry storage bucket again;The mixing slurries more than 2h or more are shelved for some reason, should be used as at waste pulp Reason, forbids to use again.
5. a kind of tri-axes deep mixing pile construction method according to claim 1, it is characterised in that: mud jacking stage stock line is not It can block, not allow to occur disconnected slurry phenomenon, full stake palpus slip casting is uniform, and soil paste sandwich of layers must not occur;Line clogging, Ying Li occurs I.e. termination of pumping is handled, stirring drill tool above mentioned immediately after to be processed and sinking 1.0m after can continue slip casting, wait 10~20 seconds Recovery is lifted up stirring, to prevent broken pile generation.
6. a kind of tri-axes deep mixing pile construction method according to claim 1, it is characterised in that: in the construction process, if because It, need to be in adjacent two width stake when processing barrier, mechanical equipment the fortuitous events generation such as badly repair, power offs and causing the construction time too long Outside carries out piling.
7. a kind of tri-axes deep mixing pile construction method according to claim 1, it is characterised in that: in Excavation Process, Once organizing construction, main leaking-stopping measure have the leak stopping of drainage tube accelerated cement, welding steel plate leak stopping immediately it was found that leakage phenomenon;Depending on Plugging effect can use two fluid grouting or polyamine ester foaming leak stopping after enclosure wall when necessary.
8. a kind of tri-axes deep mixing pile construction method according to claim 1, it is characterised in that: cement flow, grouting pressure Using Mechanical course, the strict control ratio of mud, and with the specific gravity of specific gravity instrument cement slurry check at any time.
9. a kind of tri-axes deep mixing pile construction method according to claim 1, it is characterised in that: record defect, abnormal conditions, The problem of will be present is accurate, fills in construction note in time, has recorded that a bit number, stake be long, section face in construction note table in detail Product, the time of sinking (promotion) and depth, cement consumption, cement mixed ratio, the ratio of mud.
CN201810953461.9A 2018-08-21 2018-08-21 A kind of tri-axes deep mixing pile construction method Pending CN109098175A (en)

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CN110747848A (en) * 2019-10-24 2020-02-04 湖北盛达泰水利水电工程有限公司 Construction method of gravel layer foundation deep cement mixing pile diaphragm wall
CN112282767A (en) * 2020-10-21 2021-01-29 江苏旭辰交通科技发展有限公司 Ultra-deep reinforcement construction method for shield end soil body under water-rich silty-fine sand geology
CN112575768A (en) * 2020-12-17 2021-03-30 中铁二十二局集团轨道工程有限公司 SMW construction method pile applied to subway deep foundation pit engineering
CN112609686A (en) * 2020-12-09 2021-04-06 中铁二十局集团第六工程有限公司 Construction method of triaxial mixing pile reinforcing pier in sea reclamation geological complex area
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Application publication date: 20181228