CN109183803A - A kind of deep basal pit adverse construction method device and construction method - Google Patents
A kind of deep basal pit adverse construction method device and construction method Download PDFInfo
- Publication number
- CN109183803A CN109183803A CN201811106693.7A CN201811106693A CN109183803A CN 109183803 A CN109183803 A CN 109183803A CN 201811106693 A CN201811106693 A CN 201811106693A CN 109183803 A CN109183803 A CN 109183803A
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- construction
- drill string
- pile
- helical
- construction method
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
-
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Abstract
The present invention provides a kind of deep basal pit adverse construction method device and construction methods, comprising: creeper truck；Drilling machine, it is articulated on the right side of the rack on the creeper truck, the extension bar of the second hydraulic cylinder is articulated in the right upper portion of the rack, and the top of the drill string is mounted on the headstock, and the pilot hole that the lower part of the drill string passes through the guide holder extends downwardly；In use, the second hydraulic cylinder can be driven flexible, so that the axis relative level of the drill string is vertical or relative level tilts.Slope protection pile, water-stop curtain and the construction of rotary churning pile back cover are carried out using constructing device.Invention construction, is all made of an equipment construction, so that equipment investment is smaller, reduces the inventory of damageable spare parts, is constructed using the constructing device, so that pile rugged construction is durable, it is not easy to collapse, while save groundwater resources.
Description
Technical field
The present invention relates to technical field of civil engineering, more particularly to a kind of foundation pit adverse construction method device and construction method.
Background technique
It in Construction of Deep Excavation Engineering, needs that precipitation method is taken to construct, majority of case needs to dig underground moisture
Hole is extracted, in this way meeting serious waste groundwater resources, and changes the mechanical property of original rock-soil layer, even results in foundation pit branch
The deformation of design failure and the periphery construction of structures of protection structure, or serious destruction.In order to protect groundwater resources and original rock
The mechanical property of soil layer, avoids precipitation method from constructing, and is badly in need of a kind of completely new construction equipment and construction method.
Summary of the invention
The object of the present invention is to provide a kind of deep basal pit adverse construction method device and construction methods, solve existing construction equipment
Multiplicity, the problem of construction method complexity.
In order to solve the above technical problems, the invention provides the following technical scheme:
A kind of deep basal pit adverse construction method device, wherein include:
Creeper truck；
Drilling machine, the drilling machine have rack, slide, headstock, first hydraulic cylinder, guide holder, second hydraulic cylinder and drill string,
It being articulated on the right side of the rack on the creeper truck, the slide is slidably arranged on the guide rail of the rack,
The headstock is mounted on the slide, and the first hydraulic cylinder is mounted on the top of the rack, the first hydraulic cylinder
Extension bar be connected with the slide, the guide holder is mounted on the lower end of the rack, and the second hydraulic cylinder is articulated in
On the creeper truck, the extension bar of the second hydraulic cylinder is articulated in the right upper portion of the rack, the top peace of the drill string
On the headstock, the pilot hole that the lower part of the drill string passes through the guide holder is extended downwardly, the lower part of the drill string
Equipped with drill bit；
In use, the second hydraulic cylinder can be driven flexible, so that the axis relative level of the drill string is vertical or phase
Horizontal plane is tilted.
Further, the headstock has cabinet, speed reducer, rotary reducer and hydraulic motor, the cabinet installation
In the left side of the slide, the speed reducer is mounted on the lower part of the cabinet, and the rotary reducer is mounted on the deceleration
The top of machine and with the speed reducer be drivingly connected, the hydraulic motor be mounted on the upper end of the rotary reducer and with institute
State rotary reducer drive connection.
Further, the speed reducer has pinion gear and gear wheel, and the pinion gear is mounted on the rotary reducer
Output shaft on, the gear wheel is mounted on the lower left side of the cabinet, and the gear wheel is meshed with the pinion gear, institute
The top for stating gear wheel is equipped with slip casting tap, and the lower part of the gear wheel is equipped with connecting flange, runs through in the gear wheel
Pipe and snorkel are starched equipped with sending.
Further, the drill string has connector, drilling rod and drill bit, and the connector is connected to the connecting flange
On, the drilling rod is connected on the connector, described that slurry pipe, the snorkel is sent to run through the connector and the brill
Bar, the drill bit is connected to the lower end of the drilling rod, described that slurry pipe, the snorkel is sent to be connected in the drill bit.
Further, the drill bit has upper boom cylindrical, middle bar and tapered lower beam, the periphery of the upper boom
Be equipped with several helical-blades, the periphery of the middle bar is equipped with several big blades and several nozzles, the lower beam it is outer
Week is equipped with several small blades.
Further, several helical-blade non-uniform Distributions are on the periphery of the upper boom.
Further, the upper surface of the helical-blade is equipped with several folded sheets, and the inner end of the folded sheet is connected to institute
It states on the periphery of upper boom, the outer edge of the outer end of the folded sheet close to the helical-blade, the folded sheet and the helical-blade
Upper surface between form a runner, the runner has an opening, and the opening is located at the outer end of the folded sheet.
Further, the folded sheet has the first plate and the second plate being obliquely installed, first plate, second plate
A runner is formed between the upper surface of the helical-blade, the surface of second plate is equipped with several recessed portions, institute
The bottom for stating recessed portion has the taper hole for being connected to the runner.
Further, the lower surface of the helical-blade is equipped with several stirring sheets, and the stirring sheet is by the helical-blade
Lower surface, which is bent outside the outer edge of the helical-blade, to be extended, and the stirring sheet has bending page and end, the bending page position
In the lower section of the lower surface of the helical-blade, the end is connected to the outer end of the bending page, and institute is stretched out in the end
State outside the outer edge of helical-blade, the end have convex teeth portion and shunt end face, the convex teeth portion to it is described bending page outside
Extend outside edge, the front end for shunting end face and the end being arranged in, the shunting end face has several protrusions.
The present invention also provides a kind of anchor pole whirl spraying back cover deep basal pit reversed construction methods of no dewatering operation, wherein according to
Following steps carry out:
(1) preparation of construction:
Place surrounding fence is carried out in smooth construction site, carries out slope protection pile driving construction using above-mentioned constructing device；
(2) foundation pit side-wall high-pressure rotary-spray pile water stopping curtain is constructed:
Outside slope protection pile first determine foundation pit side-wall water-stop curtain first lap construction control points, on institute construction fill
It sets in the vertical drilling and forming hole in stake position, after the completion of drilling, slurry pipe is sent to connect with slush pump, while drill string rotating gunite,
Drill string moves repeatedly up and down in 1 meter~1.5 meters, after moving repeatedly 1 minute~2 minutes up and down, send slurry pipe per minute 300
Turn to move up and down repeatedly under~350 turns of revolving speed 5 minutes~after ten minutes, then whirl spraying is promoted, and the rotation of drill string and is promoted continuous
It carries out, whirl spraying is promoted to whirl spraying is stopped when designing stake top absolute altitude, is formed the vertical high-pressure rotary jet grouting pile of first lap, is promoted drill string, clearly
It washes grouting pump and slurry is sent to manage, constructing device is then moved into next station, until the construction of first lap all piles position finishes；
The construction control points that the second circle of foundation pit side-wall water-stop curtain is determined outside the vertical high-pressure rotary jet grouting pile of first lap, will
The drilling machine of constructing device rotates by a certain angle, and in stake position inclined drilling pore-forming, after the completion of drilling, slurry pipe is sent to connect with slush pump,
While drill string rotating gunite, drill string 24 moves repeatedly up and down in 1 meter~1.5 meters, moves repeatedly up and down 1 minute
After~2 minutes, send slurry pipe 40 moved up and down repeatedly under 300 turns per minute~350 turns of revolving speed 5 minutes~after ten minutes, then
Whirl spraying is promoted, and the rotation and promotion of drill string are carried out continuously, and whirl spraying is promoted to whirl spraying is stopped when designing stake top absolute altitude, forms the second circle
Inclination high-pressure rotary jet grouting pile, promoted drill string, clean grouting pump and send slurry manage, constructing device is then moved into next station, until
Second circle all piles position construction finishes；
(3) rotary churning pile back cover is constructed:
The construction control points for determining bottom of foundation ditch rotary churning pile back cover are bored with constructing device in the stake position drilling and forming hole of setting
After the completion of hole, slurry pipe is sent to connect with slush pump, in the original location whirl spraying 1 minute~1.5 minutes, whirl spraying from bottom to top, the rotation of drill string
Turn and promotion is carried out continuously, whirl spraying is promoted to whirl spraying is stopped when designing stake top absolute altitude, drill bit is promoted and goes out aperture, clean grouting pump
And slurry is sent to manage, constructing device is then moved into next station, until the construction of all piles position is completed；
(4) anti-float anchor rod is constructed:
After the construction of rotary churning pile back cover, the construction control points of foundation pit bottom surface anti-float anchor rod are determined, carry out anti-float anchor rod construction, apply
Injecting paste material after drill string pilot hole to projected depth, will be injected during work first, the grout outlet of Grouting Pipe is inserted into away from bottom hole
400mm, from bottom to top carry out continuous pressure slip casting, grout outlet is promoted with the raising of pulp noodle during slip casting, and always away from
Below pulp noodle at 400mm, it is ensured that from hole internal drainage, exhaust, after the completion of slip casting, more bit change, the traction anchor pole reinforcing bar body of rod reaches
Soil Anchor Design absolute altitude promotes drill string, until the construction of all anti-float anchor rods is completed, the construction of foundation pit side-wall high-pressure rotary-spray pile water stopping curtain
It is connected with rotary churning pile back cover, anti-float anchor rod is connected with rotary churning pile back cover；
(5) excavation:
After the collateral support of foundation pit, whirl spraying back cover and anti-float anchor rod reach design strength, stage excavation soil mass of foundation pit, in slope protection
When 0.5 meter of 0.5 meter of side of stake and rotary churning pile back cover upper surface, stop the mechanical clear earthwork, by manually removing the earthwork, digs to hole bottom, it is complete
At foundation pit construction.
The invention has the following advantages: slope protection pile driving construction of the present invention, foundation pit side it can be seen from above-mentioned technical proposal
The construction of wall high-pressure rotary-spray pile water stopping curtain, the construction of rotary churning pile back cover and anti-float anchor rod construction, are all made of an equipment construction, so that
Equipment investment is smaller, while reducing the maintenance of equipment training of maintenance personal, reduces the inventory of damageable spare parts, using the construction
Method construction, so that water stop curtain structure is durable, it is not easy to collapse, while save groundwater resources.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is schematic perspective view of the invention.
Fig. 2 is another schematic perspective view of the invention.
Fig. 3 is the structural schematic diagram of headstock of the invention.
Fig. 4 is the structural schematic diagram of drill bit of the invention.
Fig. 5 is the structural schematic diagram of helical-blade of the invention.
Fig. 6 is the structural schematic diagram of folded sheet of the invention.
Fig. 7 is the structural schematic diagram of the second plate of the invention.
Fig. 8 is the partial structural diagram of foundation pit of the invention.
Fig. 9 is the A-A schematic cross-sectional view of Fig. 8 of the invention.
Figure 10 is the structural schematic diagram of stirring sheet of the invention.
Figure 11 is the structural schematic diagram of shunting end face of the invention.
Description of symbols: creeper truck 10, car body 11, walking mechanism 12, engine 13, hydraulic system 14, support base 15,
Drilling machine 20, rack 21, slide 22, headstock 23, cabinet 231, hydraulic motor 232, rotary reducer 233, speed reducer 234 are small
Gear 2341, gear wheel 2342, slip casting tap 2343, connecting flange 2344, drill string 24, connector 241, drilling rod 242 are led
To seat 25, first hydraulic cylinder 26, second hydraulic cylinder 27, drill bit 30, upper boom 31, middle bar 32, nozzle 321, lower beam 33, big blade
34, small blade 35, helical-blade 36, folded sheet 361, the first plate 3611, the second plate 3612, opening 3613, recessed portion 362, taper hole
3621, runner 363, stirring sheet 364 is bent page 3641, wide page portion 36411, narrow page portion 36412, end 3642, convex teeth portion
36421, lower rake 36422 shunts end face 36423, and protrusion 364231 send slurry pipe 40, snorkel 50, excavation of foundation pit sideline
60, slope protection pile 70, water-stop curtain 80, vertical high-pressure rotary jet grouting pile 81, inclination high-pressure rotary jet grouting pile 82, constructing device 100.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Below with reference to Fig. 1 to Fig. 9, the invention will be further described, a kind of no dewatering operation as depicted in figs. 1 and 2
Anchor pole whirl spraying back cover deep basal pit adverse construction method device 100, comprising: creeper truck 10, the drilling machine 20 that 10 front end of creeper truck is arranged in are carried out
Band vehicle 10 includes car body 11, and the lower part of car body 11 is equipped with walking mechanism 12, and the top of car body 11 is equipped with engine 13, hydraulic
System 14 and support base 15, the drilling machine 20 have rack 21, slide 22, headstock 23, first hydraulic cylinder 26, guide holder 25,
Second hydraulic cylinder 27 and drill string 24, the right side of the rack 21 are articulated on the support base 15 of the creeper truck 10, support base
15 can be designed to rotary turnplate, and the slide 22 is slidably arranged on two guide rails in the left side of the rack 21, described dynamic
Power case 23 is mounted on the left side of the slide 22, and the upper end of the first hydraulic cylinder 26 is mounted on the upper of the rack 21
Portion, the first hydraulic cylinder 26 are located at the left side of the rack 21, the extension bar of the first hydraulic cylinder 26 and the slide 22
It is connected, first hydraulic cylinder 26, second hydraulic cylinder 27 are connect with hydraulic system 14, and the first hydraulic cylinder 26 can drive described
Slide 22 is moved up and down along two guide rails, and the guide holder 25 is mounted on the left of the lower end of the rack 21, and described second is hydraulic
Cylinder 27 is articulated on the support base 15, and the extension bar of the second hydraulic cylinder 27 is articulated in the right upper portion of the rack 21,
The second hydraulic cylinder 27 can drive the rack 21 to swing, so that the constructing device 100 can bore vertical holes, can also bore tiltedly
Hole brings convenience for construction, and relatively existing plurality of devices work order one, constructing device 100 of the invention is vdiverse in function, saves
Great deal of investment.
The top of the drill string 24 is mounted on the headstock 23, and the lower part of the drill string 24 passes through the guide holder 25
Pilot hole extend downwardly, the lower part of the drill string 24 is equipped with drill bit 30, when using constructing device 100, can drive described the
Two hydraulic cylinders 27 are flexible, thus can be with so that the axis relative level of the drill string 24 is vertical or relative level inclination
Different holes is bored, the high-pressure rotary jet grouting pile of different angle, different slope protection piles and different water-stop curtains are made.
As shown in figure 3, the headstock 23 has cabinet 231, speed reducer 234, rotary reducer 233 and hydraulic motor
232, hydraulic motor 232 is connected with hydraulic system 14, and the cabinet 231 is mounted on the left side of the slide 22, described to subtract
Fast machine 234 is mounted on the lower part of the cabinet 231, the rotary reducer 233 be mounted on the top of the speed reducer 234 and
With the speed reducer 234 be drivingly connected, the hydraulic motor 232 be mounted on the upper end of the rotary reducer 233 and with it is described
Rotary reducer 233 is drivingly connected, and hydraulic motor 232 drives rotary reducer 233 to run, and rotary reducer 233, which drives, to slow down
Machine 234 operates.
The speed reducer 234 has pinion gear 2341 and gear wheel 2342, and the pinion gear 2341 is mounted on the revolution
On the output shaft of speed reducer 233, the gear wheel 2342 is mounted on the lower left side of the cabinet 231, the gear wheel 2342
It is meshed with the pinion gear 2341, hydraulic motor 232 drives rotary reducer 233 to run, and rotary reducer 233 drives small
The rotation of 2341 drive gear wheel 2342 of gear, the top of the gear wheel 2342 is equipped with slip casting tap 2343, the slip casting fire hose
First 2343 can connect with grouting pump, and the lower part of the gear wheel 2342 is equipped with connecting flange 2344, in the gear wheel 2342
Slurry pipe 40 and snorkel 50 are sent through being equipped with.
Preferably, the drill string 24 has connector 241, drilling rod 242 and drill bit 30, and the connector 241 is connected to institute
It states on connecting flange 2344, the drilling rod 242 is connected on the connector 241, described to send slurry pipe 40, the snorkel 50 equal
Through the connector 241 and the drilling rod 242, the drill bit 30 is connected to the lower end of the drilling rod 242, described that slurry is sent to manage
40, the snorkel 50 is connected in the drill bit 30.The lower end of the drilling rod 242 can connect connector 241, work as brill
It when hole depth is deeper, can be linked together by multiple connectors 241 and multiple drilling rods 242, form a longer drill string
24, drill bit 30 is connected on nethermost drilling rod 242, realizes the construction compared with long hole.
As shown in Figure 4, it is preferable that the drill bit 30 has upper boom 31 cylindrical, middle bar 32 and tapered lower beam
33, the periphery of the upper boom 31 is equipped with several helical-blades 36, and helical-blade 36 can stir water while drill string 24 rotates
Mud so that cement slurry is adequately stirred in hole, and then guarantees that high-pressure rotary jet grouting pile is durable, avoid cavity, from
The defects of analysis, so that high-pressure rotary jet grouting pile is more closely knit, it is not easy to damage.
As shown in Fig. 5, Fig. 6 and Fig. 7, it is preferable that several 36 non-uniform Distributions of helical-blade are in the periphery of the upper boom 31
On so that cement slurry stirred in hole it is more uniform.
The periphery of the middle bar 32 is equipped with several big blades 34 and several nozzles 321, the periphery of the lower beam 33
It is equipped with several small blades 35.
Preferably, the upper surface of the helical-blade 36 is equipped with several folded sheets 361, the setting of folded sheet 361, so that water
Mud stirred in hole it is more uniform, avoid cavity, isolation the defects of so that high-pressure rotary jet grouting pile is more closely knit, it is not easy to damage
It is bad.
The inner end of the folded sheet 361 is connected on the periphery of the upper boom 31, and the outer end of the folded sheet 361 is close to institute
The outer edge of helical-blade 36 is stated, forms a runner 363 between the folded sheet 361 and the upper surface of the helical-blade 36, it is described
Runner 363 has an opening 3613, and the opening 3613 is located at the outer end of the folded sheet 361, and runner 363 is convenient for stirring water
When mud, part of cement slurry moves to other places from runner 363.
Preferably, the folded sheet 361 has the first plate 3611 and the second plate 3612 being obliquely installed, first plate
3611, a runner 363, second plate 3612 are formed between second plate 3612 and the upper surface of the helical-blade 36
Surface be equipped with several recessed portions 362, the bottom of the recessed portion 362 has the taper hole 3621 for being connected to the runner 363,
Recessed portion 362 can migrate part of cement slurry, and cement slurry can be by entering the laggard air stream enter runner 363 of taper hole 3621, then from stream
Road 363 flows out, and cement slurry is migrated, in addition, entering the cement slurry of runner 363 from opening 3613, can flow from taper hole 3621
Out, it is migrated, so that the cement slurry in hole while being stirred continuously, obtains the migration of different location, so that cement
Slurry stirring is more uniform.
As shown in Fig. 5, Figure 10 and Figure 11, the lower surface of the helical-blade 36 is equipped with several stirring sheets 364, several are stirred
The defects of setting for mixing piece 364 enables to cement slurry to stir in hole more uniform, avoids cavity, isolation, so that high pressure
Rotary churning pile is more closely knit, it is not easy to damage.
The stirring sheet 364 is bent outside the outer edge of the helical-blade 36 from the lower surface of the helical-blade 36 to be extended,
The cement slurry of different location can be made to be stirred migration so that cement slurry stirred in hole it is more uniform, avoid cavity, from
There is bending page 3641 and end 3642, the bending page 3641 to be located at the helical-blade 36 for the defects of analysis, the stirring sheet 364
Lower surface lower section, the bending page 3641 be able to drive cement slurry migration, the end 3642 is connected to the bending page
3641 outer end, and the end 3642 is stretched out outside the outer edge of the helical-blade 36, end 3642 enables to pockets of
Cement slurry is broken up, so that the cement slurry broken up scatter, obtains mixing and stirring, the end with other cement slurries
3642 have convex teeth portion 36421 and shunt end face 36423, and the convex teeth portion 36421 is to outside the outer edge of the bending page 3641
Extend, convex teeth portion 36421 makes pockets of cement be easy to be broken up, and the shunting end face 36423 is arranged in the end 3642
Front end, the shunting end face 36423 has several protrusions 364231, several protrusions 364231 can stir cement slurry,
So that cement slurry flowing is faster, the defects of accelerating cement slurry to stir in hole more uniform, avoid cavity, isolation, so that high
Pressure rotary-spraying stake is more closely knit, it is not easy to damage, the inside of the end 3642 is equipped with lower rake 36422, lower rake
36422 to be intended to pockets of cement slurry to be broken up decomposition.
The bending page 3641 has wide page portion 36411, and the end bend in the wide page portion 36411 is connected to the spiral
On the lower surface of leaf 36, the front end in the wide page portion 36411 is connected with narrow page portion 36412, and the narrow page portion 36412 is located at described
The front end in the lower surface of helical-blade 36 and the narrow page portion 36412 extends to outside the outer edge of the helical-blade 36, wide page portion
36411 radius of curvature is greater than the radius of curvature in narrow page portion 36412, the above structure of the bending page 3641, so that close to institute
It states the near the perimeter of cement slurry of upper boom 31 and the near the perimeter of cement slurry far from the upper boom 31 obtains in various degree respectively
Migration and stirring so that the cement slurry in hole be stirred on the whole it is more uniform, avoid cavity, isolation the defects of,
So that high-pressure rotary jet grouting pile is more closely knit, it is not easy to damage.
The anchor pole whirl spraying back cover deep basal pit reversed construction method of a kind of no dewatering operation provided by the invention, wherein with reference to figure
Shown in 8 and Fig. 9, follow the steps below:
(1) preparation of construction:
Carry out place surrounding fence in smooth construction site, it is ensured that " three supplies and one leveling " of construction site use constructing device 100
Or conventional drill carries out slope protection pile 70 and constructs, slope protection pile 70 is arranged in 60 adjacent edges of excavation of foundation pit sideline, using crane in well
Mouth installation steel reinforcement cage；
(2) foundation pit side-wall high-pressure rotary-spray pile water stopping curtain is constructed:
The construction control points that the first lap of foundation pit side-wall water-stop curtain 80 is first determined outside slope protection pile 70, using constructing device
100 in the vertical drilling and forming hole in stake position, after the completion of drilling, slurry pipe 40 and slush pump is sent to connect, 24 rotating-spray cement slurry of drill string
Meanwhile drill string 24 moves repeatedly up and down in 1 meter~1.5 meters, after moving repeatedly 1 minute~2 minutes up and down, slurry pipe 40 is sent to exist
After moving up and down 5 minutes~10 minutes under 300 turns per minute~350 turns of revolving speed repeatedly, then whirl spraying is promoted, the rotation of drill string 24
Turn and promotion is carried out continuously, whirl spraying is promoted to whirl spraying is stopped when designing stake top absolute altitude, forms the vertical high-pressure rotary jet grouting pile of first lap
81, drill string 24 is promoted, grouting pump is cleaned and send slurry pipe 40, constructing device 100 is then moved into next station, until first lap institute
There is the construction of stake position to finish；Drill string 24 moves repeatedly up and down in 1 meter~1.5 meters, after moving repeatedly 1 minute~2 minutes up and down, send
Slurry pipe 40 moves up and down 5 minutes~10 minutes repeatedly under 300 turns per minute~350 turns of revolving speed, so that cement slurry stirring is more
Add uniformly, so that molding vertical high-pressure rotary jet grouting pile 81 is more closely knit, the vertical high-pressure rotary jet grouting pile 81 of first lap is located at slope protection pile 70
Periphery, overlap joint is not less than 0.5 meter between stake；
The Construction control of the second circle of foundation pit side-wall water-stop curtain 80 is determined outside the vertical high-pressure rotary jet grouting pile 81 of first lap
Point rotates by a certain angle the drilling machine 20 of constructing device 100, in stake position inclined drilling pore-forming, after the completion of drilling, send slurry pipe 40 with
Slush pump is connected, and while 24 rotating-spray cement slurry of drill string, drill string 24 moves repeatedly up and down in 1 meter~1.5 meters, up and down instead
Again move 1 minute~2 minutes after, send slurry pipe 40 moved up and down repeatedly under 300 turns per minute~350 turns of revolving speed 5 minutes~
After ten minutes, then whirl spraying is promoted, and the rotation and promotion of drill string 24 are carried out continuously, and whirl spraying is promoted to stopping rotation when designing stake top absolute altitude
Spray forms the inclination high-pressure rotary jet grouting pile 82 of the second circle, promotes drill string 24, cleans grouting pump and send slurry pipe 40, then fills construction
It sets 100 and moves to next station, until the second circle all piles position construction finishes, drill string 24 moves repeatedly up and down in 1 meter~1.5 meters
It is dynamic, after moving repeatedly 1 minute~2 minutes up and down, send slurry pipe 40 under 300 turns per minute~350 turns of revolving speed repeatedly on move down
It is 5 minutes~10 minutes dynamic, so that cement slurry stirring is more uniform, so that molding inclination high-pressure rotary jet grouting pile 82 is more closely knit, the
Two circle inclination high-pressure rotary jet grouting piles 82 are located at vertical 81 periphery of high-pressure rotary jet grouting pile of first lap, as shown in figure 9, inclination high-pressure rotary jet grouting pile
82 relative level have certain angle, so that entire water stop curtain structure is stablized, prevent leak.
(3) rotary churning pile back cover is constructed:
The construction control points for determining bottom of foundation ditch rotary churning pile back cover, with constructing device 100 or conventional drill setting stake
Position drilling and forming hole after the completion of drilling, send slurry pipe 40 and slush pump to connect, whirl spraying 1 minute~1.5 minutes in the original location, from it is lower to
Upper whirl spraying, the rotation and promotion of drill string 24 are carried out continuously, and whirl spraying is promoted to whirl spraying is stopped when designing stake top absolute altitude, drill bit is promoted
Aperture out cleans grouting pump and send slurry pipe 40, constructing device 100 then moved to next station, until all piles position has been constructed
At；
(4) anti-float anchor rod is constructed:
After the construction of rotary churning pile back cover, the construction control points of foundation pit bottom surface anti-float anchor rod are determined, with constructing device 100 or routine
Drilling machine is constructed, progress anti-float anchor rod construction, first by after drill string 24 or drilling rod pilot hole to projected depth in work progress, is infused
Enter injecting paste material, the grout outlet insertion of Grouting Pipe carries out continuous pressure slip casting, during slip casting away from bottom hole 400mm from bottom to top
Grout outlet is promoted with the raising of pulp noodle, and always below away from pulp noodle at 400mm, it is ensured that from hole internal drainage, exhaust, slip casting is complete
Cheng Hou, more bit change 30, the traction anchor pole reinforcing bar body of rod reach Soil Anchor Design absolute altitude, promote drill string 24 or drilling rod, until all anti-
Floating anchor bolt construction is completed, and the construction of foundation pit side-wall high-pressure rotary-spray pile water stopping curtain is connected with rotary churning pile back cover, anti-float anchor rod and rotation
Spray stake back cover is connected；
(5) excavation:
After the collateral support of foundation pit, whirl spraying back cover and anti-float anchor rod reach design strength, stage excavation soil mass of foundation pit, in slope protection
When 0.5 meter of 0.5 meter of side of stake and rotary churning pile back cover upper surface, stop the mechanical clear earthwork, by manually removing the earthwork, digs to hole bottom, it is complete
At foundation pit construction.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of deep basal pit adverse construction method device characterized by comprising
Creeper truck (10)；
Drilling machine (20), the drilling machine (20) have rack (21), slide (22), headstock (23), first hydraulic cylinder (26), guiding
Seat (25), second hydraulic cylinder (27) and drill string (24),
It is articulated on the creeper truck (10) on the right side of the rack (21), the slide (22) is slidably arranged in the rack
(21) on guide rail, the headstock (23) is mounted on the slide (22), and the first hydraulic cylinder (26) is mounted on described
The extension bar on the top of rack (21), the first hydraulic cylinder (26) is connected with the slide (22), the guide holder (25)
It is mounted on the lower end of the rack (21), the second hydraulic cylinder (27) is articulated on the creeper truck (10), second liquid
The extension bar of cylinder pressure (27) is articulated in the right upper portion of the rack (21), and the top of the drill string (24) is mounted on the power
On case (23), the pilot hole that the lower part of the drill string (24) passes through the guide holder (25) is extended downwardly, the drill string (24)
Lower part is equipped with drill bit (30)；
In use, the second hydraulic cylinder (27) can be driven flexible, so that the axis relative level of the drill string (24) is vertical
Or relative level inclination.
2. deep basal pit adverse construction method device according to claim 1, which is characterized in that the headstock (23) has cabinet
(231), speed reducer (234), rotary reducer (233) and hydraulic motor (232), the cabinet (231) are mounted on the slide
(22) left side, the speed reducer (234) are mounted on the lower part of the cabinet (231), and the rotary reducer (233) is mounted on
It the top of the speed reducer (234) and is drivingly connected with the speed reducer (234), the hydraulic motor (232) is mounted on described
The upper end of rotary reducer (233) and with the rotary reducer (233) be drivingly connected.
3. deep basal pit adverse construction method device according to claim 2, which is characterized in that the speed reducer (234) has small
Gear (2341) and gear wheel (2342), the pinion gear (2341) are mounted on the output shaft of the rotary reducer (233),
The gear wheel (2342) is mounted on the lower left side of the cabinet (231), the gear wheel (2342) and the pinion gear
(2341) it is meshed, the top of the gear wheel (2342) is equipped with slip casting tap (2343), the gear wheel (2342)
Lower part is equipped with connecting flange (2344), runs through to be equipped in the gear wheel (2342) and send slurry pipe (40) and snorkel (50).
4. deep basal pit adverse construction method device according to claim 3, which is characterized in that the drill string (24) also has connection
Head (241) and drilling rod (242), the connector (241) are connected on the connecting flange (2344), and the drilling rod (242) is even
It connects on the connector (241), it is described to send slurry pipe (40), the snorkel (50) through the connector (241) and institute
It states drilling rod (242), the drill bit (30) is connected to the lower end of the drilling rod (242), described to send slurry pipe (40), the snorkel
(50) with the drill bit (30) in be connected.
5. deep basal pit adverse construction method device according to claim 1, which is characterized in that it is in cylinder that the drill bit (30), which has,
The periphery of upper boom (31), middle bar (32) and the tapered lower beam (33) of shape, the upper boom (31) is equipped with several helical-blades
(36), the periphery of the middle bar (32) is equipped with several big blades (34) and several nozzles (321), the lower beam (33)
Periphery is equipped with several small blades (35).
6. deep basal pit adverse construction method device according to claim 5, which is characterized in that several helical-blades (36) are non-homogeneous
It is distributed on the periphery of the upper boom (31).
7. deep basal pit adverse construction method device according to claim 6, which is characterized in that the upper surface of the helical-blade (36)
Equipped with several folded sheets (361), the inner end of the folded sheet (361) is connected on the periphery of the upper boom (31), the folding
Close to the outer edge of the helical-blade (36), the folded sheet (361) is upper with the helical-blade (36) for the outer end of lamination (361)
It is formed between surface a runner (363), the runner (363) has an opening (3613), and the opening (3613) is located at described
The outer end of folded sheet (361).
8. deep basal pit adverse construction method device according to claim 7, which is characterized in that the folded sheet (361), which has, to be inclined
The first plate (3611) and the second plate (3612) being tiltedly arranged, first plate (3611), second plate (3612) and the spiral shell
A runner (363) is formed between the upper surface of vane (36), it is recessed that the surface of second plate (3612) is equipped with several
Concave portion (362), the bottom of the recessed portion (362) have the taper hole (3621) for being connected to the runner (363).
9. deep basal pit adverse construction method device according to claim 6, which is characterized in that the lower surface of the helical-blade (36)
Equipped with several stirring sheets (364), the stirring sheet (364) is bent from the lower surface of the helical-blade (36) to the helical-blade
(36) extend outside outer edge, the stirring sheet (364) has bending page (3641) and end (3642), the bending page
(3641) positioned at the lower section of the lower surface of the helical-blade (36), the end (3642) is connected to bending page (3641)
Outer end, and the end (3642) are stretched out outside the outer edge of the helical-blade (36), the end (3642) has convex teeth portion
(36421) and end face (36423) are shunted, the convex teeth portion (36421) extends to outside the outer edge of bending page (3641), institute
It states and shunts end face (36423) setting in the front end of the end (3642), the shunting end face (36423) has several protrusions
(364231)。
10. a kind of anchor pole whirl spraying back cover deep basal pit reversed construction method of no dewatering operation, which is characterized in that according to the following steps
It carries out:
(1) preparation of construction:
Place surrounding fence is carried out in smooth construction site, using constructing device such as described in any item of the claim 1 to 8
(100) slope protection pile (70) construction is carried out；
(2) foundation pit side-wall high-pressure rotary-spray pile water stopping curtain is constructed:
The construction control points for first determining the first lap of foundation pit side-wall water-stop curtain (80) outside in slope protection pile (70), are wanted using such as right
Constructing device described in asking any one of 1 to 8 (100) is in the vertical drilling and forming hole in stake position, after the completion of drilling, send slurry pipe (40) and mud
Stock pump is connected, and while drill string (24) rotating-spray cement slurry, drill string (24) moves repeatedly up and down in 1 meter~1.5 meters, up and down
After moving repeatedly 1 minute~2 minutes, slurry pipe (40) is sent to move up and down 5 points repeatedly under 300 turns per minute~350 turns of revolving speed
Clock~after ten minutes, then whirl spraying is promoted, the rotation and promotion of drill string (24) are carried out continuously, and whirl spraying is promoted to when designing stake top absolute altitude
Stop whirl spraying, form the vertical high-pressure rotary jet grouting pile (81) of first lap, promoted drill string (24), clean grouting pump and send slurry pipe (40),
Then constructing device (100) is moved into next station, until the construction of first lap all piles position finishes；
The Construction control of second circle of foundation pit side-wall water-stop curtain (80) is determined outside in the vertical high-pressure rotary jet grouting pile (81) of first lap
Point rotates by a certain angle the drilling machine (20) of constructing device (100), in stake position inclined drilling pore-forming, after the completion of drilling, slurry is sent to manage
(40) connected with slush pump, while drill string (24) rotating-spray cement slurry, drill string (24) in 1 meter~1.5 meters up and down repeatedly
It is mobile, after moving repeatedly 1 minute~2 minutes up and down, send slurry pipe (40) under 300 turns per minute~350 turns of revolving speed repeatedly on
Lower movement 5 minutes~after ten minutes, then whirl spraying is promoted, the rotation and promotion of drill string (24) are carried out continuously, and whirl spraying is promoted to design
Stop whirl spraying when stake top absolute altitude, form the inclination high-pressure rotary jet grouting pile (82) of the second circle, promoted drill string (24), cleans grouting pump and send
Slurry pipe (40), then moves to next station for constructing device (100), until the second circle all piles position construction finishes；
(3) rotary churning pile back cover is constructed:
The construction control points for determining bottom of foundation ditch rotary churning pile back cover are bored with constructing device (100) in the stake position drilling and forming hole of setting
After the completion of hole, slurry pipe (40) and slush pump is sent to connect, in the original location whirl spraying 1 minute~1.5 minutes, whirl spraying from bottom to top, drill string
(24) rotation and promotion is carried out continuously, and whirl spraying is promoted to whirl spraying is stopped when designing stake top absolute altitude, drill bit is promoted and goes out aperture, clearly
It washes grouting pump and send slurry pipe (40), constructing device (100) is then moved into next station, until the construction of all piles position is completed；
(4) anti-float anchor rod is constructed:
After the construction of rotary churning pile back cover, the construction control points of foundation pit bottom surface anti-float anchor rod are determined, carry out anti-float anchor rod construction, constructed
Injecting paste material after drill string (24) pilot hole to projected depth, will be injected in journey first, the grout outlet of Grouting Pipe is inserted into away from bottom hole
400mm, from bottom to top carry out continuous pressure slip casting, grout outlet is promoted with the raising of pulp noodle during slip casting, and always away from
Below pulp noodle at 400mm, it is ensured that from hole internal drainage, exhaust, after the completion of slip casting, more bit change (30) draws the anchor pole reinforcing bar body of rod
Reach Soil Anchor Design absolute altitude, is promoted drill string (24), until the construction of all anti-float anchor rods is completed, foundation pit side-wall high-pressure rotary jet grouting pile sealing
Curtain construction is connected with rotary churning pile back cover, and anti-float anchor rod is connected with rotary churning pile back cover；
(5) excavation:
After the collateral support of foundation pit, whirl spraying back cover and anti-float anchor rod reach design strength, stage excavation soil mass of foundation pit, in slope protection pile side
0.5 meter and when 0.5 meter of rotary churning pile back cover upper surface, stops the mechanical clear earthwork, by manually removing the earthwork, dig to hole bottom, complete base
Hole construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106693.7A CN109183803A (en) | 2018-09-21 | 2018-09-21 | A kind of deep basal pit adverse construction method device and construction method |
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| CN201811106693.7A CN109183803A (en) | 2018-09-21 | 2018-09-21 | A kind of deep basal pit adverse construction method device and construction method |
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| CN109183803A true CN109183803A (en) | 2019-01-11 |
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| CN112726569A (en) * | 2021-01-30 | 2021-04-30 | 北京滕宇翔建设工程有限公司 | High-pressure jet grouting device for foundation reinforcement and construction method |
| CN115075262A (en) * | 2022-07-21 | 2022-09-20 | 中国水利水电第三工程局有限公司 | Deep foundation pit supporting structure for cast-in-situ bored pile |
| CN115929209A (en) * | 2023-02-03 | 2023-04-07 | 山西煤炭运销集团科学技术研究有限公司 | Accurate drilling rig is used in regional water disaster prevention and cure of coal mining |
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