CN106703705A - Combined type drill applicable to high-spray stirring cement pile - Google Patents
Combined type drill applicable to high-spray stirring cement pile Download PDFInfo
- Publication number
- CN106703705A CN106703705A CN201611129973.0A CN201611129973A CN106703705A CN 106703705 A CN106703705 A CN 106703705A CN 201611129973 A CN201611129973 A CN 201611129973A CN 106703705 A CN106703705 A CN 106703705A
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- nozzle
- stirring
- stirring wing
- hole
- drill body
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- 238000003756 stirring Methods 0.000 title claims abstract description 154
- 239000007921 spray Substances 0.000 title claims abstract description 44
- 239000004568 cement Substances 0.000 title claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 37
- 238000005096 rolling process Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 70
- 239000010959 steel Substances 0.000 claims description 70
- 238000005553 drilling Methods 0.000 claims description 39
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 32
- 239000004567 concrete Substances 0.000 claims description 25
- 238000012545 processing Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 8
- 235000000396 iron Nutrition 0.000 claims description 7
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 6
- 238000009955 starching Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 description 19
- 238000002347 injection Methods 0.000 description 18
- 239000007924 injection Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 15
- 238000010276 construction Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 238000002156 mixing Methods 0.000 description 8
- 229920002472 Starch Polymers 0.000 description 6
- 235000019698 starch Nutrition 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 bit body Substances 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011016 integrity testing Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- 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
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- 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
- 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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- 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
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
- E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
- E21B10/633—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a combined type drill applicable to a high-spray stirring cement pile. The combined type drill comprises a hollow cylindrical drill body which is internally provided with a gas path and a slurry path, two first stirring blades and two second stirring blades are distributed oppositely on the outer wall of the drill body; the position, below the second stirring blades, of the lower portion of outer wall of the drill body, is provided with a second nozzle; the lower surface of a drill tip is provided with a third vent hole and a third nozzle; the ends, far away from the drill body, of the first stirring blades, are provided with two fixed plates, a slurry hosepipe and a gas path hosepipe, a nozzle veering seat is arranged between the two fixed plates, locating bolt holes and rolling bearing mounting holes are formed in the two fixed plates, the nozzle veering seat is in a flat cylindrical shape, mounting holes are formed in the center of the two end faces of the nozzle veering seat, a protrusion, a slurry hole and a gas hole are formed in the hook face of the nozzle veering seat, rotation shafts are fixedly arranged in the mounting holes, two ends of the rotation shafts are inserted into a rolling bearing and are tightly coordinated with the inner holes of the rolling bearing so as to achieve the pivot of the nozzle veering seat.
Description
Technical field
The present invention relates to spray stirring concrete earth pile technical field of construction high in architectural engineering, and in particular to one kind is applied to height
Spray the combination type drill bit and its application method of stirring concrete earth pile.
Background technology
Height spray stirring concrete earth pile can be not only used for reinforcing muck soil, saturation loess, the soft soil foundation such as cohesive soil, again can be with
The rigid piles such as pile tube, piling bar are used cooperatively, in composite pile.Height spray stirring concrete earth pile is simple with its applied widely, technique
The advantages of list, low cost, is widely used in foundation and fast development.As height sprays the fast of stirring concrete earth pile
Speed development and application, how rapidly and efficiently, the completion spray stirring concrete earth pile high guaranteed both quality and quantity is constructed into order to everybody pays close attention to
Focus, and it is drill bit with a key factor of quality to determine spray stirring concrete earth pile speed of application high.Therefore the development of drill bit
Increasingly cause the attention of people.At present, the present Research of drill bit is as follows used by related pile foundation construction：
（1）The Chinese patent of Application No. 201520780742.0 discloses a kind of drilling tool for two-tube high-pressure rotary-spray technique,
It includes into slurry assembly, drilling rod, drill bit, it is described enter starch assembly including slurry intake channel, the first height be pressed into slurry core pipe, inlet channel,
First tracheae, second is provided with drilling rod and enters to starch core pipe, the second tracheae, and drill bushing is provided with drilling rod lower end, is set in drill bushing
The exit of lower end two for having three-way connection, three-way connection is respectively provided with high-pressure mortar spraying mouth, and venthole is provided with the lower end of drill bushing.The brill
Tool without stirring wing, fix by nozzle, and without combination function, whitewashing mouth is not stepped overhanging along stake footpath, is whitewashed not in the cross section of stake
Uniformly, mixing effect is poor.
（2）The Chinese patent of Application No. 201520195048.2 discloses a kind of drill bit for quadruple high-pressure rotary-spray,
Including bit body, core pipe, the right-hand member connection cutter head of core pipe, cutter head middle part is provided with shoulder hole, fixed seat is provided with shoulder hole, Gu
Spring is installed in reservation middle part perforate, spring head is abutted with steel ball, and hole is provided with the circumferential wall of bit body and cutter head, it is solid in hole
Surely there is base, nozzle assembly is installed on base.The drilling tool is fixed without stirring wing, nozzle, and without combination function, whitewashing mouth is not in rank
Scalariform is overhanging along stake footpath, is whitewashed in the cross section of stake uneven, and mixing effect is poor.
（3）The Chinese patent of Application No. 201520499770.5 discloses a kind of drilling bit, including bores body
And drill bit, inner and outer tubes are provided with boring in body, wherein inner tube is extended in drill bit, is set up separately on the circumferencial direction for boring body
Be equipped with vertical view shower nozzle that horizontal plane angle is -20 °, be 20 ° with horizontal plane angle and look up shower nozzle and horizontal shower nozzle.The drill bit
Without stirring wing, nozzle is fixed, and without combination function, is overlooked shower nozzle, is looked up shower nozzle and horizontal shower nozzle is not stepped overhanging along stake footpath,
Whitewashing is uneven in the cross section of stake, and mixing effect is poor.
（4）The Chinese patent of Application No. 201320862022.X discloses a kind of for major diameter compound section soil cement
The churning of stake, the compound construction drill of stirring, including mixing pile drilling rod, the head of the mixing pile drilling rod are provided with mixing pile drill bit,
Mixing pile drill bit is provided with first jet, and mixing pile drilling rod is provided with second nozzle.The drill bit is fixed without combination function, nozzle,
Bit central cannot be mutually linked without lower nozzle, whitewashing scope along stake footpath, and whitewashing in the cross section of stake may be caused uneven.
（5）The Chinese patent of Application No. 200520032327.3 discloses a kind of drilling bit, including drill bit
Body, gunniting hole, are provided with two symmetrical brill leaves on the bit body above gunniting hole, bore the upper and lower surface of leaf with the horizontal
One angle, the distance bored between leaf two ends matches with stake footpath, and it is 15 ° to bore the upper and lower surface of leaf with the angle of horizontal plane.The drill bit
Without combination function, nozzle is fixed, and gunniting hole is not stepped overhanging along stake footpath, is whitewashed in the cross section of stake uneven.
（6）The Chinese patent of Application No. 95216200.8 discloses a kind of spray and stirs injecting treatment ground based devices, on drill bit
2 high pressure nozzles long are set；2 stirring vanes, the uniform slurry outlet of vacuum side of blade（Level）, it is also possible on drill bit vertically to
Under.Using TY-201 types air deflector, Grouting Pipe, bar footpath is not more than 75mm.The bit nozzle is fixed, without combination function, outside nozzle
Elongation cannot be adjusted.It is 0.28m/min to survey comprehensive rate of penetration in Jinan City Tianqiao District building site, and rate of penetration is slower,
Boring and coring core sample locally presss from both sides mud.
（7）The Chinese patent of Application No. 00260160.5 disclose one kind can and meanwhile complete to drill, spray, agitating function
Stake construction equipment.At least 3 pressure pipes of conveying gas, water and slurries are set in drilling rod.Drilling rod bottom sets successively from the bottom to top
Put drill bit, injector, agitator.The bit nozzle is fixed, and without combination function, nozzle extension cannot be adjusted.
（8）The Chinese patent of Application No. 03130665.9 discloses a kind of cement earth pile with injection and agitating function
Engineering method, target drill.Agitating shaft lower end sets agitating shaft nozzle, and spray pressure 1MPa ~ 5MPa, stirring vane outer rim sets blade
Nozzle, spray pressure 3MPa ~ 15MPa, between stirring vane or top set the traditional method of indicating the pronunciation of a Chinese character cut blade.The bit nozzle is fixed, nothing
Combination function, it is impossible to adjust drill bit form according to formation condition, bad adaptability, nozzle extension cannot be adjusted.
（9）The Chinese patent of Application No. 200710013698.0 discloses a kind of with jet agitation pipe（Outer end is set
Nozzle）, puddler drilling tool form, puddler is above jet agitation bar.Bottom sets drill bit.Using double tube method, once
Pile-formation process is stirred in whole spray on one.The drilling tool nozzle is fixed, without combination function, it is impossible to adjust drill bit form according to formation condition,
Bad adaptability, nozzle extension cannot be adjusted.
（10）The Chinese patent of Application No. 2009100859553.8 discloses a kind of water, slurry high-pressure injection twice, additional
The drilling tool of stirring vane stirring.Drilling rod can use on-bladed drilling rod or long screw drill rod.Drill bit bottom and side are welded with paddle
Piece, the upper and lower two-layer nozzle in drill bit side, upper strata water spray, lower floor's whitewashing, nozzle is using K, X ,-type arrangement.The drilling tool nozzle is consolidated
Fixed, without combination function, it is impossible to adjust drill bit form according to formation condition, bad adaptability, nozzle is not stepped overhanging along stake footpath,
Whitewashing is uneven in the cross section of stake.
Comprehensive analysis above pile foundation construction drill bit, is primarily present following deficiency：（1）Drilling tool nozzle is fixed, spray angle
Non-adjustable, without combination function, ground adaptability is poor；（2）Stirring wing and nozzle extension can not be adjusted according to stake footpath, pile is straight
Footpath it cannot be guaranteed that；（3）Bit nozzle is not ladder-like arranged along stake footpath, is whitewashed in pile body cross section uneven, in fact it could happen that folder
Mud phenomenon；（4）It is not provided with manhole, drill bit maintenance and inspection inconvenience.
The content of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, there is provided one kind is for architectural engineering spray stirring water high
The drill bit of soil pile driving construction, specifically provide a kind of simple structure, whitewashing stirs, stratum is applied widely, be easy to maintenance, easily
In the combination type drill bit suitable for height spray stirring concrete earth pile installed.Another object of the present invention is to provide a kind of being applicable
In the combination type drill bit application method of height spray stirring concrete earth pile.
In order to achieve the above object, the present invention uses following technical scheme：It is a kind of to spray stirring concrete earth pile suitable for height
Combination type drill bit, it includes the drill body in hollow cylindrical and built-in gas circuit and slurry road, the phase on the outer wall of drill body
To being disposed with two the first stirring wings and two the second stirring wings, the first stirring wing is located at the top of the second stirring wing, and first stirs
The projection in the horizontal plane of wing and the second stirring wing is mixed to be mutually perpendicular to；The second stirring wing is located in the outer wall bottom of drill body
Lower section is provided with second nozzle, it is characterized in that drilling rod bolt hole, air admission hole and slurry-feeding hole are provided with the top of drill body,
The first stirring wing installing plate and the second stirring wing installing plate are provided with the outer wall of drill body, in the first stirring wing installing plate and
Bolt hole is provided with second stirring wing installing plate, first and second stirring wing is connected by bolt with drill body, is stirred first
The female joint slotting soon for the outer steel pipe of second connected with air admission hole being provided with the middle part of wing installing plate and being connected with slurry-feeding hole is mixed, the
A two outer outer diameter of steel pipes more than slotting female joint soon, a second outer steel pipe with it is fast to insert female joint concentric, and fast insert female joint and be longer than the
A two outer steel pipe；It is located at below the second stirring wing installing plate in bit-body face and is provided with the second venthole and second nozzle peace
Dress hole；
Drill body bottom is provided with apex point draw-in groove and apex point bolt hole, apex point is provided with apex point draw-in groove, apex point passes through
Apex point bolt is fixed on drill body.
The lower surface of apex point is provided with the 3rd venthole and the 3rd nozzle；
One end of drill body is provided with slotting male joint soon and a first outer steel pipe, a first outer steel on the first stirring wing
, more than slotting male joint external diameter soon, slotting male joint is concentric with a first outer steel pipe soon, and slotting male joint is longer than outside first soon for bore
Silk steel pipe.
One end away from drill body on the first stirring wing is provided with two pieces of fixed plates, slurry road flexible pipe and gas circuit flexible pipe,
Nozzle steering base is provided between two pieces of fixed plates, positioning bolt hole, rolling bearing is provided with two pieces of fixed plates and is installed
Hole, rolling bearing is fixedly mounted in rolling bearing mounting hole, and rolling bearing is fixedly mounted in rolling bearing mounting hole, fast to insert
Male joint is connected by starching road flexible pipe with the slurry hole on nozzle steering base, and a first outer steel pipe is turned to by gas circuit flexible pipe with nozzle
Stomata connection on seat.
Nozzle steering base is in oblate column, mounting hole is provided with the center of nozzle steering base both ends of the surface, in nozzle steering base
Both ends of the surface on be additionally provided with some location holes near edge, raised, slurry hole is provided with the curved surface of nozzle steering base gentle
Hole, is provided with first jet mounting hole and the first venthole in projection, and rotating shaft, the two of rotating shaft are fixedly installed in mounting hole
End is inserted into rolling bearing and realizes that nozzle steering base is pivoted with the endoporus tight fit of rolling bearing.Pacify with first jet in slurry hole
The connection of dress hole, stomata are connected with the first venthole.
Positioning hole number is 5 or 7, and any location hole is consolidated with rear insertion bolt in positioning bolt hole coaxial pair
It is fixed, different location holes and positioning bolt hole centering are converted, it is capable of achieving between -45 ° on the basis of horizontal line~45 ° of first jet
Change, make the injection direction of first jet adjustable.When drill bit creeps into, first jet can be adjusted to injection downwards, make drilling more
Plus easily；When multiple spray is stirred again, first jet can be adjusted to injection upwards, make stirring more uniform；It is changed without the situation of stirring wing
Under, first jet can be adjusted to horizontal-jet, make expanded diameter bigger.
Described drill body is formed by Q235 or Q345 steel processing and fabricatings, diameter 22cm~35cm, and wall thickness 2.0cm~
3.0cm。
First stirring wing and the second stirring wing are blade stirrer wing, can be stirred from different size according to different stake footpaths
Wing.First stirring wing and the second stirring wing by thickness of slab for the steel plate processing and fabricating of 30mm~50mm is formed, they and drill body
The vertical angle of axis is 20 °~60 °, spatially divides upper and lower two-layer, interlamellar spacing 30cm~50cm, adjacent two layers stirring
Wing can be connected by stirring wing bolt in 90 ° of distributions with drill body.First stirring wing be connected with drill body after drill bit outside
Footpath 0cm~10cm smaller than cement earth pile diameter, the outside diameter after the second stirring wing is connected with drill body is more straight than cement earth pile
Small 10cm~the 20cm in footpath, its value is determined by soil property, is got the small value when soil property is harder, taken large values when soil property is softer.First stirring wing
Ladder reduces the external diameter of external diameter, the external diameter of the second stirring wing and drill body from top to bottom, reduces drilling resistance.For cohesive soil
Blade stirrer wing can be used, rake teeth type stirring wing can be used for powder, chiltern class soil.
The bottom of the outer wall of drill body is provided with tapped manhole, manhole cover is provided with external screw thread, energy
Manhole cover is closely linked together with manhole by the internal thread on manhole enough.When drill bit whitewashing or jet occur
During failure, manhole cover can be opened, drill body internal duct is overhauled by manhole.
A fastener for connection outside a second outer steel pipe and first, soon slotting female joint is connected with fast slotting male joint, wherein first will be interior
Be screwed to for internal thread outer-hexagonal bolt by screw thread and a first outer steel pipe or a second outer fastener for connection by silk outer-hexagonal bolt
Bottom, makes to insert female joint soon or insert male joint soon to protrude from internal thread outer-hexagonal bolt, secondly will soon insert female joint and insert male joint with fast
Quick grafting, last unscrewed internal thread outer-hexagonal bolt, make a first outer steel pipe with second outward a steel pipe with internal thread outer-hexagonal spiral shell
Bolt is tightly connected.
Described first jet mounting hole, second nozzle mounting hole, the 3rd nozzle mounting hole medial surface have internal thread.It is described
First jet, second nozzle and the 3rd nozzle diameter be 1.5mm~3.5mm, each nozzle interlaced arrangement, by screw thread and first
Nozzle mounting hole, second nozzle mounting hole and the 3rd nozzle mounting hole connection, its floor projection are equivalent to concentric structure, slurries
Spray regime is mutually linked, and covers whole pile body cross section.First jet, second nozzle and the 3rd nozzle pass through pipeline and enter slurry
Hole is connected, and wherein first jet is fixed on the first stirring wing, can change its extension by changing the first stirring wing, is fitted
Answer piles with different footpath pile demand.
The first described venthole is looped around around first jet.Second venthole is looped around around second nozzle.3rd
Venthole is looped around around the 3rd nozzle.
A diameter of 10cm~the 13cm of manhole, positioned at drill body bottom, its medial surface has internal thread.
Described apex point can be combined by apex point draw-in groove and drill body, be fixedly connected by apex point bolt, be bored
Sharp bottom side length 22cm~35cm, 20cm~30cm high, thick 20mm~30mm, there is two kinds of structure shapes of triangular pyramidal and double triangular pyramidals
Formula, triangular pyramidal apex point is applied to cohesive soil, and double triangular pyramidal apex points are applied to aleuritic texture class soil.Apex point is by high-strength wearable metal
Processing and fabricating is formed.
The basic structure of the first stirring wing and the second stirring wing uses rake teeth type structure, and the first stirring wing is included in one
The center rod iron of empty and lateral arrangement, is disposed with some longitudinal long steel bars on the rod iron of center, and the middle part of longitudinal long steel bar is with
Heart rod iron intersects vertically, and the two ends of longitudinal long steel bar are provided with cone point, is set on outermost one longitudinal long steel bar
There are two short rod irons of transverse direction, laterally short rod iron one end links together with longitudinal long steel bar, and the other end is provided with cone point,
The short rod iron in the longitudinal direction parallel with longitudinal long steel bar laterally is provided with short rod iron, two pieces are provided between two short rod irons of transverse direction
Fixed plate, is provided with nozzle steering base between two pieces of fixed plates, and positioning bolt hole, the axis of rolling are provided with two pieces of fixed plates
Mounting hole, slurry road flexible pipe and gas circuit flexible pipe are held, rolling bearing is fixedly mounted in rolling bearing mounting hole, slotting male joint soon passes through
Slurry road flexible pipe is connected with the slurry hole on nozzle steering base, and a first outer steel pipe is by the stomata on gas circuit flexible pipe and nozzle steering base
Connection.
Nozzle steering base is in oblate column, mounting hole is provided with the center of nozzle steering base both ends of the surface, in nozzle steering base
Both ends of the surface on be additionally provided with some location holes near edge, raised, slurry hole is provided with the curved surface of nozzle steering base gentle
Hole, is provided with first jet mounting hole and the first venthole in projection, and rotating shaft, the two of rotating shaft are fixedly installed in mounting hole
End is inserted into rolling bearing and realizes that nozzle steering base is pivoted with the endoporus tight fit of rolling bearing.Pacify with first jet in slurry hole
The connection of dress hole, stomata are connected with the first venthole.
Center rod iron, longitudinal long steel bar, the short rod iron in longitudinal direction and laterally short rod iron by a diameter of 30mm~50mm rod iron
Processing and fabricating is formed；
Using double triangular pyramidal apex points, it is made by high-strength wearable intermetallic composite coating.Furthermore it is possible to by blade stirrer wing, harrow
Tooth-like stirring wing and the assembling of triangular pyramidal apex point, double triangular pyramidal apex point permutation and combination and drill body are applied with adapting to Different Strata
Work demand.
Suitable for the application method of the combination type drill bit of height spray stirring concrete earth pile, it is characterized in that comprising the following steps：
（1）Bit diameter is determined according to design document, if having be connected with drill body after diameter meet require stirring wing, directly
Selecting is used.If alternative without suitable dimension stirring wing, processing and fabricating meets desired stirring wing, without by whole drill bit
Re-work making.
（2）The soft or hard degree in local stratum is judged according to exploration report.If stratum is softer, first jet can be adjusted to upward
Injection；If stratum is neither too hard, nor too soft, first jet can be adjusted to horizontal-jet；If stratum is harder, first jet can be adjusted to
Injection downwards.
（3）Together with drilling rod is bolted with drill body, and the equipment such as grouting pump, air compressor machine are connected,
Test running is carried out on vacant lot, each pipeline connection sealing situation is checked, it is ensured that after without spillage gas leakage, is formally crept on stake position
Sink.
（4）Nozzle spray direction can be adjusted flexibly according to actual drilling effect.If first jet sprays downwards, expanded diameter
When being unsatisfactory for requiring, then nozzle is adjusted to horizontal-jet；If first jet horizontal-jet or upwards injection, drilling is sunk difficult
When, then nozzle is adjusted to injection downwards.
The beneficial effect of this programme is：1. it is original it is high spray stirring concrete earth pile driving construction drill bit（Application No.
95216200.8 Chinese patent）Drilling resistance is big, and low construction efficiency is overhauled and inconvenient maintenance, and comprehensive rate of penetration is
0.28m/min, the drill bit synthesis rate of penetration of the application is 0.76m/min, and efficiency improves nearly three times；2. drill bit first jet angle
Degree is adjustable, can be to the harder region emphasis injection in stratum；3. drill bit tapered arrangement on the whole, ladder reduces external diameter from top to bottom,
Reduce drilling resistance, improve efficiency of construction；4. each layer of stirring wing and nozzle interlaced arrangement, stirring wing, injection stream are stirred together for, stir
Mix uniform；5. drill bit is Demountable combined-type, and ground adaptability is strong, maintenance is convenient；6. drill bit application method simplicity, science, conjunction
Reason.
Brief description of the drawings
Fig. 1 applies to the combination type drill bit structural representation of spray stirring concrete earth pile high.Fig. 2 is the right view of Fig. 1.Figure
3 is the upward view of Fig. 2.Fig. 4 applies to the first stirring wing structural representation of the combination type drill bit of spray stirring concrete earth pile high.
Fig. 5 is the right view of Fig. 4.
Fig. 6 is the dimensional structure diagram of drill body；Fig. 7 is the upward view of Fig. 6.
Fig. 8 is the structural representation of nozzle steering gear；Fig. 9 is the rearview of Fig. 8.
Figure 10 be nozzle steering gear be in horizontal-jet state when structural representation.
Figure 11 is rake teeth type drill bit structure schematic diagram.
Figure 12 is the connection diagram of vane type drill bit and drilling rod.Figure 13 is the connection signal of rake teeth type drill bit and drilling rod
Figure.
Figure 14 is in the apex point structural representation of triangular pyramidal.Figure 15 is the apex point structural representation in double triangular pyramidals.
Figure 16 is three whitewashing scope schematic diagrames of nozzle of the invention.
In figure, 1- drill bodies；The stirring wings of 2- first；The stirring wings of 3- second；4- second nozzles；5- manhole covers；6- determines
Position bolt；7- first jets；8- apex points；9- stirring wing bolts；The ventholes of 10- first；11- apex point bolts；12- rolling bearings；
The ventholes of 13- the 3rd；The nozzles of 14- the 3rd；15- inserts male joint soon；The outer steel pipe of 16- first；17- positioning bolt holes；18- is rolled
Bearing mounting hole；19- gas circuit flexible pipes；20- starches road flexible pipe；21- drilling rod bolts hole；22- air admission holes；23- slurry-feeding holes；24- second
Outer silk steel pipe；25- inserts female joint soon；26- the second stirring wing installing plates；27- manholes；The ventholes of 28- second；29- second sprays
Mouth mounting hole；30- the first stirring wing installing plates；31- apex point bolts hole；32- apex point draw-in grooves；The nozzle mounting holes of 33- the 3rd；34-
Location hole；35- mounting holes；36- first jet mounting holes；37- stomatas；38- starches hole；39- nozzle steering bases；40- rotating shafts；41-
Center rod iron；42- longitudinal directions long steel bar；The horizontal short rod irons of 43-；The longitudinal short rod irons of 44-；45- fixed plates；46- drilling rods；47- bolts；
48- is raised；49- footpath；The nozzles of 50- the 3rd whitewashing scope；51- second nozzles whitewashing scope；52- first jets whitewashing scope.
Specific embodiment
This programme is described further below in conjunction with the accompanying drawings.
Embodiment 1：As shown in Figure 1, 2, 3, a kind of combination type drill bit suitable for height spray stirring concrete earth pile, it is including being in
Hollow cylindrical and the drill body 1 on built-in gas circuit and slurry road, it is positioned opposite on the outer wall of drill body 1 to there are two first to stir
Wing 2 and two the second stirring wings 3 are mixed, the first stirring wing 2 is located at the top of the second stirring wing 3, the first stirring wing 2 and the second stirring
The projection in the horizontal plane of wing 3 is mutually perpendicular to；The lower section for being located at the second stirring wing 3 in the outer wall bottom of drill body 1 is provided with
Second nozzle 4.
As shown in fig. 6, being provided with drilling rod bolt hole 21, air admission hole 22 and slurry-feeding hole 23 at the top of drill body 1, boring
The first stirring wing installing plate 30 and the second stirring wing installing plate 26 are provided with the outer wall of head body 1, are installed in the first stirring wing
Bolt hole, first and second stirring wing are provided with the stirring wing installing plate 26 of plate 30 and second（2,3）By bolt and drill body
1 connection, the middle part of the first stirring wing installing plate 30 be provided with the second outer steel pipe 24 that connect with air admission hole 22 and with enter to starch
The female joint 25 slotting soon of the connection of hole 23, the second outer external diameter of a steel pipe 24 more than slotting female joint 25 soon, a second outer steel pipe 24 with it is fast
Insert female joint 25 with one heart, and slotting female joint 25 is longer than a second outer steel pipe 24 soon；The second stirring wing is located on the surface of drill body 1
The lower section of installing plate 26 is provided with the second venthole 28 and second nozzle mounting hole 29.
The bottom of drill body 1 is provided with apex point draw-in groove 32 and apex point bolt hole 31, brill is provided with apex point draw-in groove 32
Point 8, apex point 8 is fixed on drill body 1 by apex point bolt 11.
As shown in fig. 7, the lower surface in apex point is provided with the 3rd venthole 13 and the 3rd nozzle 14；
As shown in Fig. 4,5,9, one end of drill body 1 is provided with slotting male joint 15 and first soon on the first stirring wing 2
Outer silk steel pipe 16, the first outer internal diameter of a steel pipe 16 inserts the external diameter of male joint 15 more than fast, soon the outer steel pipe of slotting male joint 15 and first
16 with one heart, and slotting male joint 15 is longer than a first outer steel pipe 16 soon.
One end away from drill body 1 on the first stirring wing 2 is provided with two pieces of fixed plates 45, slurry road flexible pipe 20 and gas circuit
Flexible pipe 19, is provided with nozzle steering base 39 between two pieces of fixed plates 45, and positioning bolt hole is provided with two pieces of fixed plates 45
17th, rolling bearing mounting hole 18, fixedly mounts rolling bearing 12 in rolling bearing mounting hole 18, and slotting male joint 15 is by slurry soon
Road flexible pipe 20 is connected with the slurry hole 38 on nozzle steering base 39, and a first outer steel pipe 16 is by gas circuit flexible pipe 19 and nozzle steering base
Stomata 37 on 39 is connected.
As shown in Figure 8,9, 10, nozzle steering base 39 is in oblate column, is provided with the center of the both ends of the surface of nozzle steering base 39
Mounting hole 35, is additionally provided with some location holes 34, in nozzle steering base 39 in the both ends of the surface of nozzle steering base 39 near edge
Curved surface on be provided with raised 48, slurry hole 38 and stomata 37, being provided with first jet mounting hole 36 and first on raised 48 goes out
Stomata 10, is fixedly installed rotating shaft 40 in mounting hole 35, and the two ends of rotating shaft 40 are inserted into rolling bearing 12 and and the axis of rolling
The endoporus tight fit for holding 12 realizes that nozzle steering base 39 is pivoted.Slurry hole 38 connects with first jet mounting hole 36, stomata 37 and the
One venthole 10 is connected.
The quantity of location hole 34 is 5 or 7, and any location hole 34 positions spiral shell with rear insertion in the coaxial pair of positioning bolt hole 17
Bolt 6 is fixed, and converts different location holes 34 and the centerings of positioning bolt hole 17, be capable of achieving first jet 7 on the basis of horizontal line-
Change between 45 °~45 °, makes the injection direction of first jet 7 adjustable.When drill bit creeps into, first jet 7 can be adjusted to downwards
Injection, is more prone to drilling；When multiple spray is stirred again, first jet 7 can be adjusted to injection upwards, make stirring more uniform；Not more
In the case of changing stirring wing, first jet 7 can be adjusted to horizontal-jet, make expanded diameter bigger.
As shown in Figure 6,7, described drill body 1 is formed by Q235 or Q345 steel processing and fabricatings, and diameter 22cm~
35cm, wall thickness 2.0cm~3.0cm.
As shown in Figure 1, 2, 3, the first stirring wing 2 and the second stirring wing 3 are blade stirrer wing, can be according to different stake footpaths
From different size stirring wing.First stirring wing 2 and the second stirring wing 3 are by thickness of slab for the steel plate processing and fabricating of 30mm~50mm
Into, their vertical angles with the axis of drill body 1 are 20 °~60 °, spatially divide upper and lower two-layer, interlamellar spacing 30cm~
50cm, adjacent two layers stirring wing can be connected by stirring wing bolt 9 in 90 ° of distributions with drill body 1.First stirring wing 2 and brill
Outside diameter 0cm~10cm smaller than cement earth pile diameter after the head connection of body 1, after the second stirring wing 3 is connected with drill body 1
Outside diameter 10cm~20cm smaller than cement earth pile diameter, its value determines that got the small value when soil property is harder, soil property is softer by soil property
When take large values.Ladder reduces the external diameter of the external diameter of the first stirring wing, the external diameter of the second stirring wing and drill body from top to bottom, subtracts
Small drilling resistance.Blade stirrer wing can be used for cohesive soil, rake teeth type stirring wing can be used for powder, chiltern class soil.
As shown in Figure 2,6, the bottom of the outer wall of drill body is provided with tapped manhole 27, manhole cover 5
External screw thread is provided with, manhole cover 5 can closely be linked together with manhole 27 by the internal thread on manhole 27.
When drill bit whitewashing or jet break down, manhole cover 5 can be opened, the internal duct of drill body 1 is entered by manhole 27
Row maintenance.
As shown in Fig. 4,6,7, a described second outer steel pipe 24 is connected with a first outer steel pipe 16, soon slotting female joint 25 and
Slotting male joint 15 soon is connected, wherein first by internal thread outer-hexagonal bolt by screw thread and a first outer steel pipe or a second outer steel pipe connecting
Connect, and internal thread outer-hexagonal bolt is screwed to bottom, make to insert female joint soon or insert male joint soon to protrude from internal thread outer-hexagonal bolt, secondly
Female joint 25 will soon be inserted and insert the quick grafting of male joint 15 with fast, last unscrewed internal thread outer-hexagonal bolt will make a first outer steel pipe 16
It is connected with internal thread outer-hexagonal bolt seal with a second outer steel pipe 24.
First jet mounting hole 36, second nozzle mounting hole 29, the inner side of the 3rd nozzle mounting hole 33 as described in Fig. 6,7,8
There is internal thread in face.As shown in Fig. 1,3,6,7,8, described first jet 7, a diameter of 1.5mm of 4 and the 3rd nozzle of second nozzle 14
~3.5mm, each nozzle interlaced arrangement, by screw thread and first jet mounting hole 36, the nozzle of second nozzle mounting hole 29 and the 3rd
Mounting hole 33 is connected, and its floor projection is equivalent to concentric structure, and slurries spray regime is mutually linked, and covers whole pile body transversal
Face.First jet 7, the nozzle 14 of second nozzle 4 and the 3rd are connected by pipeline with slurry-feeding hole 23, and wherein first jet 7 is fixed on
On first stirring wing 2, its extension can be changed by changing the first stirring wing 2, adapt to piles with different footpath pile demand.
As shown in figs. 1 and 8, the first described venthole 10 is looped around around first jet 7.As a shown in Figure 6, second goes out
Stomata 28 is looped around around second nozzle 4.As shown in figure 3, the 3rd venthole 13 is looped around around the 3rd nozzle 14.
As a shown in Figure 6, a diameter of 10cm~13cm of manhole 27, positioned at the bottom of drill body 1, its medial surface has interior spiral shell
Line.
As shown in Fig. 1,2,7, described apex point 8 can be combined by apex point draw-in groove 32 with drill body 1, by boring
Sharp bolt 11 is fixedly connected, the bottom side length 22cm of apex point 8~35cm, 20cm~30cm high, thick 20mm~30mm, have triangular pyramidal and
Two kinds of structure types of double triangular pyramidals, triangular pyramidal apex point is applied to cohesive soil, and double triangular pyramidal apex points are applied to aleuritic texture class
Soil.Apex point 8 is made by high-strength wearable intermetallic composite coating.
Embodiment 2：The present embodiment part same as Example 1 is repeated no more, and difference is：
As shown in Figure 11,13,15, the basic structure of the first stirring wing 2 and the second stirring wing 3 uses rake teeth type structure, first
Stirring wing 2 includes hollow and lateral arrangement a center rod iron 41, and some longitudinal long steel bars are disposed with center rod iron 41
42, middle part and the center rod iron 41 of longitudinal long steel bar 42 intersect vertically, and the two ends of longitudinal long steel bar 42 are provided with cone point,
Two short rod irons 43 of transverse direction are provided with outermost one longitudinal long steel bar 42, laterally short one end of rod iron 43 and longitudinal long steel bar
42 link together, and the other end is provided with cone point, are provided with laterally short rod iron 43 parallel with longitudinal long steel bar 42
The short rod iron 44 in longitudinal direction, two pieces of fixed plates 45 are provided between two short rod irons 43 of transverse direction, are set between two pieces of fixed plates 45
There is nozzle steering base 39, positioning bolt hole 17, rolling bearing mounting hole 18, slurry road flexible pipe 20 are provided with two pieces of fixed plates 45
With gas circuit flexible pipe 19, rolling bearing 12 is fixedly mounted in rolling bearing mounting hole 18, slotting male joint 15 is by starching road flexible pipe soon
Connected with the slurry hole 38 on nozzle steering base 39, a first outer steel pipe 16 is by the gas on gas circuit flexible pipe 19 and nozzle steering base 39
Hole 37 connects.
Nozzle steering base 39 is in oblate column, mounting hole 35 is provided with the center of the both ends of the surface of nozzle steering base 39, in nozzle
Some location holes 34 are additionally provided near edge in the both ends of the surface of steering base 39, are provided with the curved surface of nozzle steering base 39 convex
Rise, starch hole 38 and stomata 37, the venthole 10 of first jet mounting hole 36 and first is provided with projection, it is solid in mounting hole 35
Surely rotating shaft 40 is provided with, the two ends of rotating shaft 40 are inserted into rolling bearing 12 and realize spray with the endoporus tight fit of rolling bearing 12
Mouth steering base 39 is pivoted.Hole 38 is connected slurry with first jet mounting hole 36, stomata 37 is connected with the first venthole 10.
Center rod iron 41, longitudinal long steel bar 42, the short rod iron 44 in longitudinal direction and laterally short rod iron 43 by a diameter of 30mm~
The rod iron processing and fabricating of 50mm is formed；
Using double triangular pyramidal apex points, it is made by high-strength wearable intermetallic composite coating.Furthermore it is possible to by blade stirrer wing, harrow
Tooth-like stirring wing and triangular pyramidal apex point, double triangular pyramidal apex point permutation and combination and drill body 1 assemble to adapt to Different Strata
Construction demand.
Embodiment 3：
A kind of application method of combination type drill bit suitable for height spray stirring concrete earth pile, it comprises the following steps：
（1）Bit diameter is determined according to design document, if having be connected with drill body 1 after diameter meet require stirring wing,
Directly select.If alternative without suitable dimension stirring wing, processing and fabricating meets desired stirring wing, without will entirely bore
Nose heave new processing and fabricating.
（2）The soft or hard degree in local stratum is judged according to exploration report.If stratum is softer, can by first jet 7 be adjusted to
Upper injection；If stratum is neither too hard, nor too soft, first jet 7 can be adjusted to horizontal-jet；If stratum is harder, first jet 7 can be adjusted
Whole is injection downwards.
（3）Drilling rod 46 is linked together with drill body by bolt 47, and connects grouting pump, air compressor machine etc. and set
It is standby, test running is carried out on vacant lot, check each pipeline connection sealing situation, it is ensured that after without spillage gas leakage, carried out just on stake position
Formula drilling is sunk.
（4）Nozzle spray direction can be adjusted flexibly according to actual drilling effect.If first jet sprays downwards, expanded diameter
When being unsatisfactory for requiring, then nozzle is adjusted to horizontal-jet；If first jet horizontal-jet or upwards injection, drilling is sunk difficult
When, then nozzle is adjusted to injection downwards.
In practical application, when nozzle sprays downwards, rate of penetration is existing drill bit（In Application No. 95216200.8
State's patent）2.8 times；When nozzle sprays upwards, Soil-cement is more uniform, the more existing brill of low strain integrity testing pile quality
More preferably, the uniaxial compressive strength of boring and coring core sample is existing drill bit construction cement earth pile core sample to the cement earth pile of head construction
1.4 times；When nozzle level sprays, expanded diameter sprays about 1.2 times of raising compared with nozzle up or down.Due to using combined type
Construction, drill bit repairs speed and improves 3 times than existing drill bit.
Claims (8)
1. a kind of suitable for the combination type drill bit for spraying stirring concrete earth pile high, it includes being in hollow cylindrical and built-in gas circuit and slurry
The drill body on road, it is positioned opposite on the outer wall of drill body to have two the first stirring wings and two the second stirring wings, first
Stirring wing is located at the top of the second stirring wing, and the projection in the horizontal plane of the first stirring wing and the second stirring wing is mutually perpendicular to；
The outer wall bottom of drill body is located at below the second stirring wing and is provided with second nozzle, it is characterized in that at the top of drill body
Drilling rod bolt hole, air admission hole and slurry-feeding hole are provided with, the first stirring wing installing plate and are provided with the outer wall of drill body
Two stirring wing installing plates, bolt hole is provided with the first stirring wing installing plate and the second stirring wing installing plate, and first and second stirs
Mix wing to be connected with drill body by bolt, be provided with outside second connected with air admission hole in the middle part of the first stirring wing installing plate
Silk steel pipe and the female joint slotting soon connected with slurry-feeding hole, a second outer outer diameter of steel pipes is more than slotting female joint soon, a second outer steel pipe
It is concentric with fast slotting female joint, and slotting female joint is longer than a second outer steel pipe soon；Pacify positioned at the second stirring wing in bit-body face
Dress plate lower section is provided with the second venthole and second nozzle mounting hole；
Drill body bottom is provided with apex point draw-in groove and apex point bolt hole, apex point is provided with apex point draw-in groove, apex point passes through
Apex point bolt is fixed on drill body；The lower surface of apex point is provided with the 3rd venthole and the 3rd nozzle；
One end of drill body is provided with slotting male joint soon and a first outer steel pipe, a first outer steel on the first stirring wing
, more than slotting male joint external diameter soon, slotting male joint is concentric with a first outer steel pipe soon, and slotting male joint is longer than outside first soon for bore
Silk steel pipe；
One end away from drill body on the first stirring wing is provided with two pieces of fixed plates, slurry road flexible pipe and gas circuit flexible pipe, two
Nozzle steering base is provided between block fixed plate, positioning bolt hole, rolling bearing mounting hole are provided with two pieces of fixed plates,
Rolling bearing is fixedly mounted in rolling bearing mounting hole, fast slotting male joint is by starching the slurry Kong Lian on road flexible pipe and nozzle steering base
Logical, a first outer steel pipe is connected by gas circuit flexible pipe with the stomata on nozzle steering base；
Nozzle steering base is in oblate column, mounting hole is provided with the center of nozzle steering base both ends of the surface, the two of nozzle steering base
Some location holes are additionally provided near edge on end face, raised, slurry hole and stomata are provided with the curved surface of nozzle steering base,
First jet mounting hole and the first venthole are provided with projection, rotating shaft is fixedly installed in mounting hole, the two ends of rotating shaft are inserted
Enter in rolling bearing and realize that nozzle steering base is pivoted with the endoporus tight fit of rolling bearing；Slurry hole and first jet mounting hole
Connection, stomata are connected with the first venthole.
2. according to claim 1 suitable for the combination type drill bit for spraying stirring concrete earth pile high, it is characterized in that positioning hole count
Measure is 5 or 7.
3. according to claim 1 suitable for the combination type drill bit for spraying stirring concrete earth pile high, it is characterized in that described brill
Head body is formed by Q235 or Q345 steel processing and fabricatings, diameter 22cm~35cm, wall thickness 2.0cm~3.0cm.
4. according to claim 1 suitable for the combination type drill bit for spraying stirring concrete earth pile high, it is characterized in that the first stirring
Wing and the second stirring wing are blade stirrer wing, and the first stirring wing and the second stirring wing are added by the steel plate that thickness of slab is 30mm~50mm
Work is made, spacing 30cm~50cm, the first stirring wing be connected with drill body after outside diameter than cement earth pile diameter
Small 0cm~10cm, the second stirring wing be connected with drill body after outside diameter 10cm~20cm smaller than cement earth pile diameter.
5. according to claim 1 suitable for the combination type drill bit for spraying stirring concrete earth pile high, it is characterized in that in drill bit sheet
The bottom of the outer wall of body is provided with tapped manhole, and manhole cover is provided with external screw thread；The a diameter of 10cm of manhole~
13cm, positioned at drill body bottom, its medial surface has internal thread.
6. according to claim 1 suitable for the combination type drill bit for spraying stirring concrete earth pile high, it is characterized in that the first stirring
The basic structure of wing and the second stirring wing uses rake teeth type structure, and the first stirring wing includes that one hollow and in lateral arrangement
Heart rod iron, is disposed with some longitudinal long steel bars on the rod iron of center, and middle part and the center rod iron of longitudinal long steel bar intersect vertically, and indulges
The two ends of long steel bar are provided with cone point, two short rod irons of transverse direction are provided with outermost one longitudinal long steel bar,
Laterally short rod iron one end links together with longitudinal long steel bar, and the other end is provided with cone point, is set on laterally short rod iron
There is the short rod iron in the longitudinal direction parallel with longitudinal long steel bar.
7. according to claim 6 suitable for the combination type drill bit for spraying stirring concrete earth pile high, it is characterized in that in two horizontal strokes
To two pieces of fixed plates, slurry road flexible pipe and gas circuit flexible pipe is provided between short rod iron, nozzle is provided between two pieces of fixed plates and is turned
To seat.
8. the combination type drill bit suitable for height spray stirring concrete earth pile according to claim 1, it is characterized in that center rod iron,
Longitudinal long steel bar, the short rod iron in longitudinal direction and horizontal short rod iron are formed by the rod iron processing and fabricating of a diameter of 30mm~50mm.
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| CN201611129973.0A CN106703705B (en) | 2016-12-09 | 2016-12-09 | Combination type drill bit suitable for high spray stirring concrete earth pile |
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| CN201611129973.0A CN106703705B (en) | 2016-12-09 | 2016-12-09 | Combination type drill bit suitable for high spray stirring concrete earth pile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316281A (en) * | 2018-04-14 | 2018-07-24 | 江苏鸿基水源科技股份有限公司 | Head is stirred in a kind of three-dimensional pick |
| CN115178581A (en) * | 2021-04-01 | 2022-10-14 | 同济大学 | Soil remediation method by using high-pressure stirring and spraying liquid |
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|---|---|
| CN106703705B (en) | 2018-09-25 |
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Effective date of registration: 20191230 Address after: 250031 Shandong Province Flyover District of Ji'nan City Road 29. Co-patentee after: Shandong Jianke Speical Building Engineering Technology Center Patentee after: Shandong Academy of Building Science Co., Ltd Address before: 250031 Shandong Province Flyover District of Ji'nan City Road 29. Patentee before: Building Science Inst., Shandong Prov. |