CN110424385A - The construction of major diameter high verticality jet grouting stake in ovum rubble stratum - Google Patents
The construction of major diameter high verticality jet grouting stake in ovum rubble stratum Download PDFInfo
- Publication number
- CN110424385A CN110424385A CN201910678295.0A CN201910678295A CN110424385A CN 110424385 A CN110424385 A CN 110424385A CN 201910678295 A CN201910678295 A CN 201910678295A CN 110424385 A CN110424385 A CN 110424385A
- Authority
- CN
- China
- Prior art keywords
- cobble
- major diameter
- high pressure
- stratum
- construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 36
- 102000002322 Egg Proteins Human genes 0.000 title claims abstract description 28
- 108010000912 Egg Proteins Proteins 0.000 title claims abstract description 28
- 210000004681 ovum Anatomy 0.000 title claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 111
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 238000005266 casting Methods 0.000 claims abstract description 66
- 238000005507 spraying Methods 0.000 claims abstract description 54
- 239000004568 cement Substances 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000007921 spray Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000011440 grout Substances 0.000 claims abstract description 22
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 239000012634 fragment Substances 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000009527 percussion Methods 0.000 claims abstract description 7
- 238000013461 design Methods 0.000 claims abstract description 6
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 50
- 230000035939 shock Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000007569 slipcasting Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 230000008901 benefit Effects 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000012407 engineering method Methods 0.000 claims 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 239000000243 solution Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 8
- 239000002689 soil Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- 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
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Piles And Underground Anchors (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses the constructions of major diameter high verticality jet grouting stake in ovum rubble stratum, including following construction procedure: being drilled with down-hole hammer bore process, tup percussion loosens periphery cobble, and the clast to drill in surrounding boulder bed is blown out, bore diameter 273-800mm；The follow-up of steel pile casting overall length；Drill bit is extracted, temporary support pipe is transferred；Steel pile casting is extracted, temporary support pipe is supported hole wall；High-pressure rotary-spray drilling rod is transferred to bottom hole, side sprays high pressure water mud and high pressure gas, the temporary support pipe of corresponding position is smashed into tiny fragment, loose cobble circle body collapsing is fallen into drilling range, high pressure water mud and high pressure gas carry out cutting disturbance to the cobble after collapsing, so that collapsing diameter further expansion, cement grout fills cobble gap；It promotes whirl spraying drilling rod and continues whirl spraying and form the stake of major diameter jet grouting after cement grout solidification to design height.The present invention can form the injection stake of major diameter high verticality in ovum rubble stratum.
Description
Technical field
The present invention relates to Construction Technology of Jet Grouting Piles fields, in particular to the injection of major diameter high verticality fills in ovum rubble stratum
Starch the construction of stake.
Background technique
Jet groutinl method is also known as whirl spraying method slip casting, and abbreviation rotary churning pile rises in the high-pressure injection of nineteen seventies
Slip casting method, eight, the nineties in the whole nation obtain all-round developing and application.It facts have proved this method to processing mud, muck soil, viscous
Property soil, silt, sandy soil, artificial earth fill and gravelly soil etc. have good effect.
Rotary churning pile is that rotary jet grouting pipe and spray head brill are placed in a bottom design altitude using drilling machine, will preparatory prepared slurry
It after liquid makes liquid stream obtain huge energy by high-voltage generator, is ejected from the nozzle high speed of slip casting tube edge, forms one
The liquid stream that stock energy height is concentrated, directly the destruction soil body, in course of injection, whirl spraying drilling rod is promoted in rotation, make slurries with it is native
Body is thoroughly mixed, and the column induration of certain diameter is formed in soil, so that ground be made to be reinforced.
With the development of rotary churning pile technology, dual pipe and triple has been developed on the basis of initial substance pipe now
The rotary spray technique of pipe, expanded diameter also continue to increase.But even if using to the strongest triple tube construction technology of damage of soil body power,
It also can not be in rubble, the pile body of pebble layer formation major diameter.It can be in rubble, pebble layer therefore, it is necessary to research and develop one kind
The construction technology of major diameter pile body is realized using whirl spraying.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide major diameter high verticality in ovum rubble stratum
The construction of jet grouting stake, its advantage is that the whirl spraying pile body of major diameter can be formed in rubble, pebble layer.
Above-mentioned purpose of the invention has the technical scheme that including following construction procedure:
Step 1: down-hole hammer pilot hole, steel pile casting follow-up: being drilled with down-hole hammer bore process, bore diameter 273mm-
800mm, when drilling, tup percussion loosens periphery cobble, the clast quilt around drilling in a certain range of boulder bed
Blowout, forms loose cobble circle body；Steel pile casting overall length follow-up, until drilling to projected depth；Steel pile casting is by loose cobble circle body
It is outer to be isolated in drilling, prevents borehole collapse；
Step 2: extracting drill bit, decentralization temporary support pipe: the down-hole hammer drilling and down-hole hammer drilling rod in steel pile casting are extracted, by down-the-hole
Hammer drilling machinery is removed；It will be put into drilling under temporary support pipe, the outer diameter of temporary support pipe is less than the internal diameter of steel pile casting；
Step 3: extracting steel pile casting, temporary support pipe replaces steel pile casting to be supported hole wall；
Step 4: high-pressure rotary-spray: decentralization high-pressure rotary-spray drilling rod to bottom hole, close to the side spray of the whirl spraying drilling rod of whirl spraying drilling rod bottom end
The temporary support pipe of corresponding position is smashed into tiny fragment by high pressure water mud out, high pressure water mud, and temporary support pipe is behind
Loose cobble circle body cobble collapsing fall into drilling range in, high pressure water mud carries out cutting disturbance to the cobble after collapsing,
Existing boulder bed other than loose cobble circle body is further collapsed by after the shock vibration of high pressure water mud, so that collapsing diameter
Further expansion, cement grout fill the gap between the cobble after collapsing；
Step 5: promote whirl spraying drilling rod and continue high-pressure rotary-spray: in lifting process, temporary support pipe is gradually smashed, temporary support
The cobble of pipe behind gradually collapses, until being promoted to design height, after cement grout solidification, forms the stake of major diameter jet grouting.
Through the above technical solutions, drawing larger-diameter drilling first with down-hole hammer technique, tup percussion will be all
Side cobble loosens, while high-pressure blast is outer by the aggregate chips blowout drilling in the surrounding boulder bed that drills, and tup vibration makes cobble pine around
It moves and forms gap；As temporary support pipe is crashed to pieces when high-pressure injection, drilling surrounding cobble collapses, and forms the very big pine in gap
Dissipating bind structure；The diameter of drilling is bigger, and the range of collapsing is bigger, and the gap between cobble can also become larger, i.e., cobble is in high pressure water mud
Under percussion, there is bigger activity space；Behind cobble gap after final cement grout filling collapsing, the stake of major diameter is formed
Body.Further, since using whole steel pile casting when pilot hole, collapse hole is on the one hand avoided, the rigidity of steel pile casting is on the other hand passed through
Guiding role is played, when avoiding encountering soft or hard unevenness, incidental skew problems significantly increase verticality reliability；It puts
After entering temporary support pipe, it is ensured that extract the collapse hole phenomenon being easy to appear after steel pile casting.
The present invention is further arranged to: what is sprayed from whirl spraying drilling rod bottom drill bit further includes high pressure gas, high pressure gas and high pressure
Cement slurry jointly impacts the cobble of collapsing.
Through the above technical solutions, can increase effective spray distance of slurry, so that collapsing diameter further expansion, and allow
Cobble preferably forms rolling in hole, and gap is more uniform, and final pile body is also more uniform.
The present invention is further arranged to: slip casting hydraulic coupling >=35MPa of cement grout, and the cement grout flow of ejection >=
200L/min。
Through the above technical solutions, using super-pressure and super-flow, so that the cement slurry formation energy sprayed is very big
Column is starched, so that preferably cutting disturbance is carried out to cobble, so that the cobble rolling after collapsing, ultimately forms more uniform stake
Body.
The present invention is further arranged to: down-hole hammer technique pilot hole in step 1, the mating high wind pressure of down-hole hammer, Gao Fengliang pneumatics
Machine, wind pressure >=3.0MPa, air quantity >=30 cubic metre/min.
Through the above technical solutions, high wind pressure, Gao Fengliang can be adapted to advanced depth >=40m drilling.
The present invention is further arranged to: in step 1 before down-hole hammer technique pilot hole, adjusting the verticality of vertical guide；First
Slow drilling depth during section down-hole hammer rod boring, improves the verticality of drilling rod and steel pile casting；Steel pile casting wall thickness is greater than 10mm, steel
The rigidity of casing is larger, plays guiding role, is conducive to degree control.
Through the above technical solutions, preferably ensure that the verticality of first section steel pile casting, to ensure that the vertical of drilling
Degree；There is higher rigidity greater than the Large-diameter Steel casing of 10mm thickness, further ensures the verticality of drilling.
The present invention is further arranged to: the high-pressure rotary-spray in step 4 uses high tower, and whirl spraying drilling rod disposably protrudes into hole
Bottom carries out high-pressure rotary-spray.
Through the above technical solutions, the adapter tube during avoiding high-pressure rotary-spray, it is therefore prevented that whirl spraying rests interval, guarantees
The continuity and integrality for the pile body that whirl spraying goes out, make the pile body have better sealing and stress performance.In addition, avoiding frequently taking over
Easily caused connector damage, high pressure lower contact damage are easy to cause seal failure and influence jeting effect.
The present invention is further arranged to: in course of injection, after the slurries flowed out from the nozzle of temporary support pipe are filtered,
It is back to cement slurry stirring pool, is prepared and is stirred again, then sprays into brill again from whirl spraying drilling rod after high-pressure pump pressurizes
In hole, recycling is realized.
Through the above technical solutions, realize cement grout recycling, avoid waste of material, and prevent pollution, more
Environmental protection, it is more economical to be applicable in.
The present invention is further arranged to: being filtered using the slurries that slurry purifying equipment line up flows out.
Through the above technical solutions, slurry purifying equipment is used for the filtering of cement slurry, may be implemented 60 microns or more
Sand grains are filtered, and the cement granules less than 60 microns are recycled in cement slurry stirring pool, after the readjustment ratio of mud again
In secondary penetrating drilling.
The present invention is further arranged to: shoe is provided between drill bit and steel pile casting.
Through the above technical solutions, the shoe being installed on drill bit can be synchronized with steel pile casting downwards, in time to hole wall
It is protected, avoids the case where hole wall blocks steel pile casting, improve the efficiency of drilling.
The present invention is further arranged to: being extracted steel pile casting using pipe extractor, or is pulled up steel pile casting using pipe extractor
After one section of height, changes crane into and disposably extract steel pile casting.
Through the above technical solutions, for deeper drilling, since extruding force and frictional force of the hole wall to steel pile casting are very big,
Therefore tube drawing is carried out using patent hydraulic pipe drawing device, it is ensured that steel pile casting can be extracted smoothly；In addition, pipe extractor is responsible for stirring steel shield
Cylinder, is disposably extracted with crane, further improves working efficiency.
The present invention is further arranged to: the inner wall and/or outer wall of temporary support pipe are provided on multiple tracks scratch or tube wall and open
Equipped with multiple apertures.
There should be certain intensity to be used to support through the above technical solutions, being provided with the temporary support pipe of scratch and aperture
Hole wall, while being easy to be crashed to pieces into small fragment, fragment is clipped in pile body, will not influence the integrality of pile body, thus guarantee compared with
Good sealing.
The present invention is further arranged to: the outer diameter of temporary support pipe is 2-7cm smaller than the internal diameter of steel pile casting.
Through the above technical solutions, one side temporary support pipe ensure that major diameter, ensure that big during high-pressure injection
Big pulp exhaust passage is formed between the temporary support pipe and whirl spraying drilling rod of diameter, the row of a large amount of slurries can be better met
Out, it avoids returning slurry channel blockage and causing the accident that the structures such as borehole circumference stratum or road arch upward；On the other hand, temporary support
Pipe is as far as possible close to steel pile casting, so that the jet blower of subsequent decentralization extension as far as possible, to increase effective spray regime.
The present invention is further arranged to: the diameter of the whitewashing mouth of high pressure cement slurries is 4-6mm.
Through the above technical solutions, the cement slurry for forming major diameter starches column, preferably cobble is impacted and stirred.
The present invention is further arranged to: the cement slurry of step 4 mesohigh whirl spraying is in horizontal direction or inclined direction projects.
Through the above technical solutions, according to different geology and different operating conditions, the angle for selecting cement slurry selection to project, from
And preferably realize the cutting disturbance to cobble.
Invention is further arranged to: major diameter jet grouting stake between foundation pit slope protection stake water-seal pile, slope protection pile it
Water-seal pile in a row, Grouting afterwards, which mutually overlaps, forms water-stop curtain, the water-seal pile of diaphram wall interface or insertion fashioned iron
Stress wall is formed afterwards.
Through the above technical solutions, class concrete-pile is formed due to including cobble and cement slurry in the pile body of formation, and
And pile is uniform, so having good sealing and stress performance, can be adapted for a variety of water sealing structures and force structure.
The present invention is further arranged to: step 4 and step 5 mesohigh whirl spraying replace with high pressure swaying-jet-grouting, form fan-shaped spray
Face is penetrated, is finally overlapped with slope protection pile or voluntarily mutually overlap joint forms water-stop curtain.
This is through the above technical solutions, pile body of the Formation cross-section for sector, the better sealing for being suitable for slope protection pile behind
The water-seal pile etc. of stake and diaphram wall interface；Symmetrical sector pile body can form the sealing curtain of connection after mutually overlapping
Curtain.
The present invention is further arranged to: high-pressure rotary-spray in step 4 uses triple pipe rotary pressure spray process, and high pressure water is by corresponding positions
The temporary support pipe set smashes into tiny fragment, and the cobble collapsing of the loose cobble circle body of pvc pipe pipe behind falls into drilling model
In enclosing, under high pressure water and anticyclonic common cutting disturbance, the existing boulder bed other than loose cobble circle body is disturbed by impact
It further collapses after dynamic, so that collapsing diameter further expansion, cement grout fills the gap between the cobble after collapsing.
Through the above technical solutions, triple pipe rotary pressure spray process, in conjunction with large diameter borehole, loose cobble circle body collapses, thus
Form major diameter jet grouting pile body.
The present invention is further arranged to: step 4 mesohigh whirl spraying replacement are as follows: decentralization high-pressure rotary-spray drilling rod is close to bottom hole
The side of the whirl spraying drilling rod of whirl spraying drilling rod bottom end sprays high pressure water mud, high pressure water and high pressure gas, high pressure water and high pressure water mud
The temporary support pipe of corresponding position is smashed into tiny fragment, the cobble of the loose cobble circle body of temporary support pipe behind collapses
It falls into drilling range, high pressure water, high pressure water mud and high pressure gas carry out cutting disturbance, loose cobble circle to the cobble after collapsing
Existing boulder bed other than body is further collapsed by after shock vibration, so that collapsing diameter further expansion, cement grout are filled out
Fill the gap between the cobble after collapsing.
Through the above technical solutions, high pressure water realize to temporary support pipe smash and impact to cobble, cement slurry
By the gap filling between cobble, pile body is ultimately formed.
In conclusion the invention has the following advantages:
1, pass through Major diameter downhole hammer impact process pilot hole and twice collapse hole, cobble is made to form larger gap, then benefit in drilling
With the cement slurry jet agitation of super-pressure extrahigh energy, cement slurry is stirred evenly with cobble, pile after solidification；The construction is fine
Ground solve the problems, such as existing high-pressure rotary-spray to pebble layer cut it is motionless, squeeze motionless, form effective pile body of major diameter；
2, whole steel pile casting follow-up is used when pilot hole, avoids collapse hole, and play guiding role, is significantly increased vertical
Spend reliability；After being put into temporary support pipe, it is ensured that extract the collapse hole phenomenon being easy to appear after steel pile casting；
3, high tower jetting drill disposable jet pile avoids frequent stacks, influences jet quality and efficiency；
4, by the recycling to cement grout, avoid waste of material, and prevent pollution, it is more environmentally-friendly, make the construction
It is more economical to be applicable in；
5, using measures such as super-pressure, major diameter nozzle and high pressure gas, so that the collapse range further expansion of boulder bed, thus
Form the pile body of larger diameter；
6, it is provided with scratch on aperture or tube wall by opening up in the tube wall of temporary support pipe, so that temporary support pipe is easier quilt
Fine debris is smashed into, the quality of big chips affect pile body is prevented, causes the appearance of leak；
7, construction efficiency is improved using shoe and Special tube drawing bench.
Detailed description of the invention
Fig. 1 be when highlighting down-hole hammer pilot hole around cobble loosened and clast by high pressure gas blowout drilling signal
Figure；
Fig. 2 is the schematic diagram that steel pile casting is extracted after being put into temporary support pipe；
The schematic diagram of state in drilling when Fig. 3 is high-pressure rotary-spray.
Appended drawing reference: 1, steel pile casting；2, drill bit；21, down-hole hammer drilling rod；3, loose cobble circle body；4, temporary support pipe；5,
Whirl spraying drilling rod；6, cement slurry Grouting Pipe.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.The wherein identical appended drawing reference of identical components
It indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "upper", "lower", " bottom surface " and
" top surface " refers to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from geometric center of specific component
Direction.
Embodiment 1:
The construction of major diameter high verticality jet grouting stake in ovum rubble stratum, including following construction procedure is (since ovum is broken
Stone earth formation is similar, and following embodiment is illustrated by taking pebble layer as an example):
Step 1: down-hole hammer pilot hole, steel pile casting 1 follow up: it is drilled with down-hole hammer bore process, bore diameter 273mm-
800mm(the present embodiment is introduced by taking 273mm as an example).
Before pilot hole, adjust the verticality of the vertical guide of drilling machine, in 21 drilling process of first segment down-hole hammer drilling rod slowly into
Ruler improves the verticality of drilling rod and steel pile casting 1.In boring procedure, tup percussion loosens periphery cobble, while drilling week
The clast enclosed in a certain range of boulder bed is blown out, and forms loose cobble circle body 3；1 wall thickness of steel pile casting is greater than 10mm, overall length
Follow-up, until drilling to projected depth；Loose cobble circle body 3 is isolated in outside drilling by steel pile casting 1, prevents borehole collapse；
It, can be using top hydraulic device to 1 top surface of steel pile casting when steel pile casting 1 can not be entered hole automatically under gravity by friction
It is pushed, preferably, shoe is installed between drill bit 2 and steel pile casting 1, so that steel pile casting 1 preferably overcomes the frictional force of hole wall,
Supporting is carried out to hole wall in time.
When drilling depth is deeper, such as hole depth is more than 40m, the mating high wind pressure of down-hole hammer, Gao Fengliang air compressor machine, and wind pressure >=
3.0MPa, air quantity >=30 cubic metre/min.
Step 2: extracting drill bit 2, decentralization temporary support pipe 4: extracting the down-hole hammer drilling 2 and down-the-hole hammer drill in steel pile casting 1
Bar 21 removes down-hole hammer drilling machine；With crane etc., mechanically or manually merogenesis transfers temporary support pipe 4.Temporary support pipe 4 can
To be thin-wall tube or the floral tube for offering multiple apertures, or the pipe of setting ring-type or latticed scratch on tube wall, material
Material can be pvc pipe, be also possible to other tubing for having some strength that can be smashed again by high pressure water mud.Temporary support pipe 4
Diameter be less than steel pile casting 1 internal diameter 2-7cm.When not installing shoe between drill bit 2 and steel pile casting 1, temporary support pipe 4 it is straight
Diameter is less than 1 internal diameter 2-4cm of steel pile casting；When installing shoe, since the internal diameter of shoe 2cm smaller than the internal diameter of steel pile casting 1 is left
The right side, and shoe is mounted on the bottom end of steel pile casting 1, steel pile casting 1 can only be followed to extract, so at this point, the internal diameter of temporary support pipe 4
It should be less than 1 internal diameter 4-7cm of steel pile casting, so as to the extraction of steel pile casting 1.The case where in the present embodiment to install shoe, so using
Diameter is the pvc pipe of 200mm.
Step 3: extracting steel pile casting 1: being extracted steel pile casting 1 using the machinery such as crane；It is preferred that using hydraulic pipe drawing device by steel
After casing 1 is extracted, or steel pile casting 1 is pulled up one section of height by use pipe extractor, changes crane into and disposably pull out steel pile casting 1
Out.
Step 4: high-pressure rotary-spray: decentralization high-pressure rotary-spray drilling rod 5, using the high mast of the machinery such as long-spiral drilling machine, disposably
Whirl spraying drilling rod 5 is protruded into bottom hole, carries out high-pressure rotary-spray.Side close to the whirl spraying drilling rod 5 of 5 bottom end of whirl spraying drilling rod is provided with cement
The air nozzle of the whitewashing mouth and high pressure gas of slurry, is provided with cement slurry Grouting Pipe 6 and high-pressure air pipe, high pressure cement in whirl spraying drilling rod 5
Slurry is horizontally or diagonally projected from whitewashing mouth, and the temporary support pipe 4 of corresponding position is smashed into the fragment less than 2cm, temporary support
The cobble collapsing of the loose cobble circle body 3 of 4 behind of pipe falls into Φ 273 and drills in range, and high pressure water mud and high pressure gas are to collapsing
Cobble afterwards carries out cutting disturbance, and the existing boulder bed other than loose cobble circle body 3 is further collapsed by after shock vibration, makes
Obtain collapsing diameter further expansion, the gap between cobble after cement grout filling collapsing.
According to different geology and different operating conditions, the angle for selecting cement slurry selection to project.For example, when big in pebble layer
When the cobble accounting of particle is larger, the high pressure water mud that level projects can be sprung back, at this point, using whitewashing is tilted upward, due to big
The cobble of particle has upward activity space, to make the radius of influence further expansion of high pressure water mud.For another example, when design stake
When bottom will overlap to form water-stop curtain with basement rock, since nozzle location slightly has distance apart from hole bottom, at this time using diagonally downward
Whitewashing can be such that cement slurry preferably overlaps with basement rock, so that the faying face of boulder bed and basement rock is formed continuous pile body, be unlikely to
There is the case where stake bottom does not enter rock.
The air nozzle of high pressure gas can be on the tube wall of whirl spraying drilling rod 5, above or below high-pressure mortar spraying mouth,
It can also be arranged concentrically with whitewashing mouth, make to form the impact of high pressure gas bag slurry, can also be positioned at the bottom end of whirl spraying drilling rod 5, court
Lower setting.High pressure gas and high pressure water mud collective effect, so that collapsing diameter further expansion, and make cobble better in hole
Rolling is formed, gap is more uniform.
Preferred following relevant parameter during high-pressure rotary-spray: outspoken diameter of whitewashing is 4-6mm, preferably 5mm；Cement grout
Slip casting hydraulic coupling >=35MPa, cement grout flow >=200L/min of ejection；The pressure of high pressure gas is 1.0-1.8MPa.
In course of injection, high pressure gas carries a large amount of slurries and flows out from the nozzle of pvc pipe, more than position of whitewashing not being destroyed
Pvc pipe ensure that the smooth of pulp channel, avoid because collapse caused by pulp channel blockage and cause accident.It is big simultaneously straight
Big pulp channel is formed between the pvc pipe and whirl spraying drilling rod 5 of diameter, the row of high pressure gas and a large amount of slurries can be better met
Out.
In course of injection, the slurries flowed out from the nozzle of pvc pipe include cement slurry and cobble clast and soil etc.；It can be right
The slurries are filtered, and useful grouting composition is back to cement slurry stirring pool, is prepared and is stirred again, then passed through
It is sprayed into drilling again after high-pressure pump pressurization from whirl spraying drilling rod 5, realizes recycling.Mud can be used for the filtering of slurries
Cleaning equipment.
When due to rotary jet grouting, the slurries in hole can cut down the slurries energy of ejection, so whitewashing mouth leans on as far as possible
Nearly temporary support pipe 4, spacing between the two influences diameter range so that impact energy is preferably utilized for 20-50mm
It is bigger.Specifically, by the enlarged outside diameter of 5 end portion of whirl spraying drilling rod, the inner wall of close temporary support pipe 4, but whirl spraying drilling rod 5
Other parts do not do overstriking processing, to guarantee the plasma discharge channel of larger size.Due to whirl spraying drilling rod 5 and do not have to be crept into
Operation, so the diameter of whirl spraying drilling rod 5 can be set smaller, to guarantee large-sized plasma discharge channel.
Step 5: promote whirl spraying drilling rod 5 and continue high-pressure rotary-spray: in lifting process, temporary support pipe 4 is gradually smashed, and is faced
When 4 behind of support tube cobble gradually collapse, until be promoted to design height, whirl spraying drilling rod 5 is extracted into drilling completely, in drilling
After grout cures, the stake of major diameter jet grouting is formed.Whirl spraying drilling rod 5, which promotes speed, can be 5-15cm/min.
The principle of the construction technology are as follows: draw larger-diameter drilling first with down-hole hammer drilling machine, while tup shakes
Movement is with cobble loosening around is made, and high-pressure blast is outer by the aggregate chips blowout drilling in the surrounding boulder bed that drills in addition, makes around drilling
Cobble forms gap；When high-pressure rotary-spray, as pvc pipe is crashed to pieces, drilling surrounding cobble collapses, and forms the very big loose knot in gap
Structure.The diameter of drilling is bigger, and the range of collapsing is bigger, and the gap between cobble can also become larger, i.e., cobble is in high pressure water mud and height
It calms the anger under percussion, there is bigger activity space.Under the fan-shaped slurry column impact that nozzle diameter is 5mm and cobble have compared with
Under conditions of big activity space, the slurry column of extrahigh energy can impact the range that down-hole hammer does not influence, so that loose cobble circle
A certain range of original state cobble other than body 3 collapses, further expansion stake diameter；In the range of collapsing, cobble and clast are in height
It under the collective effect of compressed water slurry and high pressure gas, constantly rolls, is stirred, after cement slurry fills gap, formed complete
Major diameter pile body.Entire pile-formation process simplified summary are as follows: by major diameter pilot hole and collapse hole twice, make cobble formation in drilling
Larger gap recycles high mud jacking jet agitation, and cement slurry is stirred evenly with cobble, pile after solidification.The construction is fine
Ground solve the problems, such as existing high-pressure rotary-spray to pebble layer cut it is motionless, squeeze motionless, form effective pile body of major diameter.Pass through
The rigidity of steel pile casting 1 plays guiding role, when avoiding encountering soft or hard unevenness, incidental skew problems, to improve pile body
Verticality.
The major diameter jet grouting stake of formation can play support, sealing and other effects.Both can as foundation pit slope protection stake it
Between water-seal pile, the water-seal pile in a row after slope protection pile, Grouting mutually overlap and form water-stop curtain or diaphram wall interface
The water-seal pile at place forms stress wall after fashioned iron also can be inserted.
In the present embodiment, pilot hole diameter is 273mm, and loose 3 thickness of cobble circle body has after first time collapse hole up to 5-15cm
Aperture is imitated up to 373mm-523mm, in addition the secondary collapse hole after the cutting disturbance of high pressure water mud, effective pile diameter is up to 700-
1150mm。
Embodiment 2: the difference with embodiment 1 is: pilot hole diameter 500mm, pvc pipe diameter 460mm, 5 bottom end of whirl spraying drilling rod
The big whirl spraying drilling rod 5 that diameter is 420, final pile effective diameter are greater than 1m.When pilot hole diameter 800mm, effective pile diameter can reach
To 1.3m or more.
Embodiment 3:
Difference with embodiment 1 is: step 4 and step 5 mesohigh whirl spraying replace with high pressure swaying-jet-grouting, form fan-shaped jet face,
It is finally overlapped with slope protection pile or voluntarily mutually overlap joint forms water-stop curtain.
Embodiment 4:
Difference from example 1 is that: the high-pressure rotary-spray in step 4 uses triple pipe rotary pressure spray process, and high pressure water will be corresponding
The temporary support pipe 4 of position smashes into tiny fragment, and the cobble collapsing of the loose cobble circle body 3 of pvc pipe pipe behind falls into brill
Within the scope of hole, under high pressure water and anticyclonic common cutting disturbance, the existing boulder bed other than loose cobble circle body 3 is rushed
It further collapses after hitting disturbance, so that collapsing diameter further expansion, cement grout fills the gap between the cobble after collapsing.
Embodiment 5:
Difference from example 1 is that: step 4 mesohigh whirl spraying replacement are as follows: decentralization high-pressure rotary-spray drilling rod is close to bottom hole
The side of the whirl spraying drilling rod of whirl spraying drilling rod bottom end sprays high pressure water mud, high pressure water and high pressure gas, high pressure water and high pressure water mud
The temporary support pipe of corresponding position is smashed into tiny fragment, the cobble of the loose cobble circle body of temporary support pipe behind collapses
It falls into drilling range, high pressure water, high pressure water mud and high pressure gas carry out cutting disturbance, loose cobble circle to the cobble after collapsing
Existing boulder bed other than body is further collapsed by after shock vibration, so that collapsing diameter further expansion, cement grout are filled out
Fill the gap between the cobble after collapsing.Wherein high pressure water pressure preferably >=30MPa.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (18)
1. the construction of major diameter high verticality jet grouting stake in ovum rubble stratum, it is characterized in that: including that following construction walks
It is rapid:
Step 1: down-hole hammer pilot hole, steel pile casting (1) follow-up: being drilled with down-hole hammer bore process, bore diameter 273mm-
800mm, when drilling, tup percussion loosens periphery cobble, the clast quilt around drilling in a certain range of boulder bed
Blowout, forms loose cobble circle body (3)；Steel pile casting (1) overall length follow-up, until drilling to projected depth；Steel pile casting (1) will be loose
Cobble circle body (3) is isolated in outside drilling, prevents borehole collapse；
Step 2: extracting drill bit (2), decentralization temporary support pipe (4): extracting the down-hole hammer drilling (2) and down-the-hole in steel pile casting (1)
Hammer drill bar (21), down-hole hammer drilling machine is removed；It will be put into drilling under temporary support pipe (4), outside temporary support pipe (4)
Diameter is less than the internal diameter of steel pile casting (1)；
Step 3: extracting steel pile casting (1), temporary support pipe (4) replaces steel pile casting (1) to be supported hole wall；
Step 4: high-pressure rotary-spray: decentralization high-pressure rotary-spray drilling rod (5) to bottom hole, the whirl spraying drilling rod (5) close to whirl spraying drilling rod (5) bottom end
Side spray high pressure water mud, the temporary support pipe (4) of corresponding position smashes into tiny fragment by high pressure water mud, temporarily
The cobble collapsing of the loose cobble circle body (3) of support tube (4) behind is fallen into drilling range, and high pressure water mud is to the ovum after collapsing
Stone carries out cutting disturbance, and the existing boulder bed other than loose cobble circle body (3) is by the shock vibration of high pressure water mud laggard one
Step is collapsed, so that collapsing diameter further expansion, cement grout fills the gap between the cobble after collapsing；
Step 5: promote whirl spraying drilling rod (5) and continue high-pressure rotary-spray: in lifting process, temporary support pipe (4) is gradually smashed, and is faced
When support tube (4) behind cobble gradually collapse, until being promoted to design height, after cement grout solidification, form major diameter spray
Penetrate Grouting.
2. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: what is sprayed from whirl spraying drilling rod (5) bottom end further includes high pressure gas, high pressure gas and high pressure water mud jointly to the cobble of collapsing into
Row impact.
3. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: slip casting hydraulic coupling >=35MPa of cement grout, cement grout flow >=200L/min of ejection.
4. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: down-hole hammer pilot hole in step 1, the mating high wind pressure of down-hole hammer, Gao Fengliang air compressor machine, wind pressure >=3.0MPa, and air quantity >=30 are vertical
Square rice/min.
5. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: in step 1 before down-hole hammer technique pilot hole, adjusting the verticality of vertical guide；First segment down-hole hammer drilling rod (21) was crept into
Slow drilling depth in journey improves the verticality of drilling rod and steel pile casting (1)；Steel pile casting (1) wall thickness be greater than 10mm, steel pile casting (1) it is rigid
It spends larger, plays guiding role, be conducive to degree control.
6. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: the high-pressure rotary-spray in step 4 uses high tower, and whirl spraying drilling rod (5) disposably protrudes into bottom hole, carries out high-pressure rotary-spray.
7. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: in course of injection, after the slurries flowed out from the nozzle of temporary support pipe (4) are filtered, it is back to cement slurry stirring pool,
Again it is prepared and is stirred, then sprayed into drilling again after high-pressure pump pressurizes from whirl spraying drilling rod (5), realized and repeat benefit
With.
8. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 7 stratum, special
Sign is: being filtered using the slurries that slurry purifying equipment line up flows out.
9. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: being provided with shoe between drill bit (2) and steel pile casting (1).
10. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: extracting steel pile casting (1) using pipe extractor, or after steel pile casting (1) is pulled up one section of height using pipe extractor, changes into and hang
Vehicle disposably extracts steel pile casting (1).
11. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: the inner wall and/or outer wall of temporary support pipe (4), which are provided on multiple tracks scratch or tube wall, offers multiple apertures.
12. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: the outer diameter of temporary support pipe (4) is 2-7cm smaller than the internal diameter of steel pile casting (1).
13. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: the diameter of the whitewashing mouth of high pressure cement slurries is 4-6mm.
14. the construction of major diameter high verticality jet grouting stake in ovum rubble according to claim 1 stratum, special
Sign is: the cement slurry of step 4 mesohigh whirl spraying is in horizontal direction or inclined direction projects.
15. according to claim 1 in -14 any ovum rubble stratum major diameter high verticality jet grouting stake construction work
Method, it is characterized in that: major diameter high verticality jet grouting stake between foundation pit slope protection stake water-seal pile, after slope protection pile at
Arrange water-seal pile, Grouting is mutually overlapped after forming water-stop curtain, the water-seal pile of diaphram wall interface or insertion fashioned iron and formed
Stress wall.
16. according to claim 1 in -14 in any ovum rubble stratum major diameter high verticality jet grouting stake construction
Engineering method forms fan-shaped jet face it is characterized in that: step 4 and step 5 mesohigh whirl spraying replace with high pressure swaying-jet-grouting, finally with shield
Slope stake overlaps or voluntarily mutually overlap joint forms water-stop curtain.
17. according to claim 1 in -12 in any ovum rubble stratum major diameter high verticality jet grouting stake construction
Engineering method, it is characterized in that: high-pressure rotary-spray in step 4 uses triple pipe rotary pressure spray process, high pressure water is by the temporary support of corresponding position
Pipe (4) smashes into tiny fragment, and the cobble collapsing of the loose cobble circle body (3) of pvc pipe behind is fallen into drilling range, in height
It presses under water and anticyclonic common cutting disturbance, the existing boulder bed other than loose cobble circle body (3) is laggard by shock vibration
One step is collapsed, so that collapsing diameter further expansion, cement grout fills the gap between the cobble after collapsing.
18. according to claim 1 in -14 in any ovum rubble stratum major diameter high verticality jet grouting stake construction
Engineering method, it is characterized in that: step 4 mesohigh whirl spraying is replaced are as follows: decentralization high-pressure rotary-spray drilling rod (5) to bottom hole, close to whirl spraying drilling rod (5)
The side of the whirl spraying drilling rod (5) of bottom end sprays high pressure water mud, high pressure water and high pressure gas, and high pressure water and high pressure water mud will be corresponding
The temporary support pipe (4) of position smashes into tiny fragment, the cobble of the loose cobble circle body (3) of temporary support pipe (4) behind
Collapsing is fallen into drilling range, and high pressure water, high pressure water mud and high pressure gas carry out cutting disturbance, loose ovum to the cobble after collapsing
Existing boulder bed other than stone circle body (3) is further collapsed by after shock vibration, so that collapsing diameter further expansion, cement
The gap between cobble after slurries filling collapsing.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910678295.0A CN110424385A (en) | 2019-07-25 | 2019-07-25 | The construction of major diameter high verticality jet grouting stake in ovum rubble stratum |
| CN201911320968.1A CN110904957A (en) | 2019-07-25 | 2019-12-19 | Construction method of large-diameter high-verticality jet grouting pile in gravel stratum |
| CN201911320979.XA CN110984142A (en) | 2019-07-25 | 2019-12-19 | Waste slurry recycling and circulating system for rotary spraying pile or stirring spraying pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910678295.0A CN110424385A (en) | 2019-07-25 | 2019-07-25 | The construction of major diameter high verticality jet grouting stake in ovum rubble stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110424385A true CN110424385A (en) | 2019-11-08 |
Family
ID=68410827
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910678295.0A Pending CN110424385A (en) | 2019-07-25 | 2019-07-25 | The construction of major diameter high verticality jet grouting stake in ovum rubble stratum |
| CN201911320968.1A Pending CN110904957A (en) | 2019-07-25 | 2019-12-19 | Construction method of large-diameter high-verticality jet grouting pile in gravel stratum |
| CN201911320979.XA Pending CN110984142A (en) | 2019-07-25 | 2019-12-19 | Waste slurry recycling and circulating system for rotary spraying pile or stirring spraying pile |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911320968.1A Pending CN110904957A (en) | 2019-07-25 | 2019-12-19 | Construction method of large-diameter high-verticality jet grouting pile in gravel stratum |
| CN201911320979.XA Pending CN110984142A (en) | 2019-07-25 | 2019-12-19 | Waste slurry recycling and circulating system for rotary spraying pile or stirring spraying pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN110424385A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022070A (en) * | 2020-01-17 | 2020-04-17 | 葛加君 | High-pressure water-spraying tunneling construction method |
| CN112281826A (en) * | 2020-10-23 | 2021-01-29 | 北京中润宝成工程技术有限公司 | Construction method for forming pile by rotary spraying in ovoid gravel stratum |
| CN113718757A (en) * | 2021-08-28 | 2021-11-30 | 中铁时代建筑设计院有限公司 | Bottom expanding device and method based on cast-in-place large-diameter tubular pile |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733851A (en) * | 2020-07-02 | 2020-10-02 | 中国建筑第八工程局有限公司 | Construction method for jet grouting waterproof curtain under water-rich sandy gravel geological condition |
| CN112343504A (en) * | 2020-10-23 | 2021-02-09 | 北京中润宝成工程技术有限公司 | Ultrahigh-pressure jet grouting drilling machine and application thereof in jet grouting pile forming method |
| CN114875901A (en) * | 2022-04-13 | 2022-08-09 | 苏坤建设(江苏)有限公司 | Construction method of long spiral drilling and grouting pile |
| CN115652964B (en) * | 2022-12-07 | 2023-06-02 | 福建省地质工程勘察院 | Pebble layer wet drilling construction process and pebble layer wet drilling construction equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11269878A (en) * | 1998-03-26 | 1999-10-05 | Orient Engineering Kk | Slurry circulating system |
| CN2578513Y (en) * | 2002-05-31 | 2003-10-08 | 中国水利水电基础工程局科研所 | Mud purifiers |
| CN205235850U (en) * | 2015-12-17 | 2016-05-18 | 苏州虹磊橡塑科技有限公司 | Stirring promotes all -in -one |
| CN205701438U (en) * | 2016-04-08 | 2016-11-23 | 四川科新机电股份有限公司 | Vibrating screen mesh automatic flushing device |
| CN107542084A (en) * | 2016-06-24 | 2018-01-05 | 中国二十冶集团有限公司 | Hole pile making method is drawn in triple-pipe high pressure jet grouting stake under rubble, cobble geological environment |
| CN109403317A (en) * | 2018-11-28 | 2019-03-01 | 中国电建集团贵阳勘测设计研究院有限公司 | Triple-pipe rotary spraying drilling pile-forming system and pile-forming method |
| CN209752779U (en) * | 2019-01-14 | 2019-12-10 | 天津赛智灌浆设备有限公司 | Novel mixed pulping system |
-
2019
- 2019-07-25 CN CN201910678295.0A patent/CN110424385A/en active Pending
- 2019-12-19 CN CN201911320968.1A patent/CN110904957A/en active Pending
- 2019-12-19 CN CN201911320979.XA patent/CN110984142A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022070A (en) * | 2020-01-17 | 2020-04-17 | 葛加君 | High-pressure water-spraying tunneling construction method |
| CN112281826A (en) * | 2020-10-23 | 2021-01-29 | 北京中润宝成工程技术有限公司 | Construction method for forming pile by rotary spraying in ovoid gravel stratum |
| CN112281826B (en) * | 2020-10-23 | 2021-11-09 | 北京中润宝成工程技术有限公司 | Construction method for forming pile by rotary spraying in ovoid gravel stratum |
| CN113718757A (en) * | 2021-08-28 | 2021-11-30 | 中铁时代建筑设计院有限公司 | Bottom expanding device and method based on cast-in-place large-diameter tubular pile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110904957A (en) | 2020-03-24 |
| CN110984142A (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110424385A (en) | The construction of major diameter high verticality jet grouting stake in ovum rubble stratum | |
| CN203452083U (en) | Rotary expanding pile construction equipment and grout feeding device | |
| CN107574816B (en) | Detachable rotation type drilling tubular pile and construction method | |
| CN107338789B (en) | A kind of construction method of down-the-hole percussion triple-pipe high pressure jet grouting stake | |
| CN201395793Y (en) | Long spiral high-pressure spraying mud injecting stirring pile-forming device | |
| CN106522213A (en) | Rotary jet grouting bar inserting type mini pile construction method | |
| CN106284295A (en) | Multichannel high-pressure vibro-grouting jet groutinl construction method | |
| CN112281826B (en) | Construction method for forming pile by rotary spraying in ovoid gravel stratum | |
| CN206396745U (en) | Long spire stake machine with the Counterboring apparatus that spins | |
| CN105019917B (en) | Impact drilling type advanced jet grouting pipe shed construction device and construction method | |
| CN213233469U (en) | Triaxial down-the-hole impact high-pressure jet grouting equipment | |
| CN206337557U (en) | A kind of triple tube down-the-hole percussion injector combination unit | |
| CN206090565U (en) | Concrete pile's construction equipment | |
| CN204920977U (en) | Spray tube canopy construction equipment is revolved in advance to percussion drilling formula | |
| CN111894598A (en) | Shaft reinforcing method | |
| CN111005379A (en) | Construction method for removing pile body of reinforced concrete cast-in-place pile | |
| JP5305573B2 (en) | Underground solid body forming device and underground solid body forming method | |
| CN103074887A (en) | Drilling/spraying integrated foundation treatment method and special drilling rig component | |
| CN108914939A (en) | A kind of major diameter ultra-deep high pressure jet grouting construction method | |
| CN203080528U (en) | Drilling and spraying integrated foundation treating special drilling tool assembly | |
| KR101031603B1 (en) | Method and apparatus for drilling road of rotate discharge | |
| CN108842788A (en) | Stiff-core cement soil mixing pile construction method | |
| CN206337558U (en) | A kind of triple tube injector combination unit | |
| JP2005180112A (en) | Ground improvement structure and ground improvement method | |
| CN213296352U (en) | Hydraulic drill bit for efficient sleeve pile pulling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191108 |
|
| WD01 | Invention patent application deemed withdrawn after publication |