CN109594557A - A kind of super-pressure rotary churning pile machine and jet grouting pile construction method - Google Patents

Abstract

The invention discloses a kind of super-pressure rotary churning pile machine and jet grouting pile construction methods, belong to pile foundation equipment technical field.The present invention includes voluntarily running gear, Integral operating platform, rotation working platform, support transfer bar mechanism, steel wire rope hoisting mechanism, tower bar mechanism, power head and drill rod mechanism, wherein Integral operating platform is set in voluntarily running gear, and rotation working platform is located at the top of Integral operating platform and can be rotated relative to Integral operating platform；The support transfer bar mechanism is using multistage scalable hydraulic push rod, its both ends is hinged with rotation working platform and tower bar mechanism respectively, and support transfer bar mechanism between rotation working platform and tower bar mechanism also respectively by second changed course hydraulic cylinder push rod, first alter course hydraulic cylinder push rod be connected.The depth of soft foundation construction area range and single rotary-spraying construction after whirl spraying position of p ile machine can effectively be expanded using technical solution of the present invention, improves construction efficiency, and can guarantee flabbiness ground strengthened effect.

Description

A kind of super-pressure rotary churning pile machine and jet grouting pile construction method

Technical field

The invention belongs to pile foundation equipment technical fields, more specifically to a kind of super-pressure rotary churning pile machine and rotary churning pile Construction method.The present invention other than the construction requirement that can satisfy conventional equipment, be more good at processing Tailings Dam, mud, marshland, The unapproachable area of conventional equipments such as gully and construction site corner.

Background technique

At present in the Soft foundation treatment of engineering field, cement stabilization method is a kind of processing method being widely adopted. Wherein, cement mixing pile is a kind of conventional construction method, mainly using cement as the host agent of curing agent, utilizes mixing pile Cement jet is entered the soil body and is sufficiently stirred by machine, makes to generate a series of physics, chemical reaction between cement and weak soil, to make soft Soil scleroma forms the cement earth pile with globality, water stability and some strength, and then improves the intensity of ground.But it is this Method is more demanding to soil property, easily because of pile strength difference caused by stirring unevenly, to influence bearing capacity.

In order to solve drawbacks described above existing for cement mixing pile, high-pressure rotary jet grouting pile technology is come into being, in engineering pile foundation In work progress, for argillic horizon, fill stratum, mud and sand bed, the most common equipment of high-pressure rotary jet grouting pile technology is small-sized rotation Spray stake machine.The drilling rod height of this small-sized rotary churning pile machine is generally 2-3m, rotates on one side, one side high-pressure mortar spraying, by manually connecing Drilling rod realizes the increase of drilling depth.But usually there are the following problems for this small-sized rotary churning pile machine:

1) since conventional small rotary churning pile every run of steel of machine only has 2-3m, manually connect that tear drilling rod open frequent, speed-raising is unstable Fixed, Human disturbance is excessive, and excessive pile body is caused to overlap；It is connected and is sealed by flax silk between drilling rod simultaneously, be easy to cause injection Grouting pressure is unstable, grouting pressure is inadequate, lower drilling force is inadequate, therefore encounters hard stratum and have the fill stratum of disintegrating slag that can not then bore Into.In addition, pile body itself intensity after just being solidified due to cement is not high, the high-pressure rotary jet grouting pile constructed with this traditional equipment There are larger limitation, it is generally used for the composite foundation not high to requirement for bearing capacity and constructs；

2) in the construction process, frost boiling is serious, waste material, pollutes environment for conventional small rotary churning pile machine, cuts to the soil body Ability is low, underground soil property will lead to when really up to the mark can not pile, design requirement is not achieved in stake diameter.Meanwhile underground soil body restraining force without Method accurate quantification, whitewashing amount spray pressure can not accurately control, and verticality is difficult to control, and especially high-pressure rotary spraying method is more difficult to control The size of pile body diameter, and can not accomplish unanimous between the higher and lower levels；

3) conventional small rotary churning pile machine the degree of automation is low, not only causes the waste of raw material, also easily causes pile body The problems such as defect, it is low that there are construction effects, and man efficiency is low.

For disadvantages described above existing for small-sized rotary churning pile machine, application No. is the application cases of CN201710250039 to disclose one Kind combined type rotary churning pile machine, combined type rotary churning pile and its construction, this application pass through to traditional high-pressure rotary stake machine Drilling rod improves, and drilling rod is divided into inside and outside two layers, outer layer is outer tube, and internal layer is internal core rod, and the length of drilling rod can basis Actual demand determines, so that the pressure of aqueous slurry on the one hand can be improved by the height of drilling rod itself, on the other hand, bilayer is bored Bar can bear bigger water slurry hydraulic coupling, and on earth, it efficiently avoids existing small-sized rotary churning pile machine pore-formings for disposable pile The problem of the difference of construction stability caused by human interference in the process.But the internal core rod of this application is only capable of conveying a kind of water slurry Liquid carries out the construction of high-pressure rotary jet grouting pile, and not can guarantee the variation for needing reinforcement depth, is not also suitable for reinforcing area wider range Soft foundation construction.

Summary of the invention

1. technical problems to be solved by the inivention

Rotary churning pile region model when being handled using existing rotary churning pile machine soft foundation it is an object of the invention to overcome Relatively small, the lower deficiency of construction efficiency is enclosed, a kind of super-pressure rotary churning pile machine and jet grouting pile construction method are provided.Using this hair Bright technical solution can effectively expand the soft foundation construction area range after whirl spraying position of p ile machine, improve construction efficiency, And it can guarantee flabbiness ground strengthened effect.

2. technical solution

In order to achieve the above objectives, technical solution provided by the invention are as follows:

A kind of super-pressure rotary churning pile machine of the invention, including voluntarily running gear, Integral operating platform, rotation working platform, Transfer bar mechanism, steel wire rope hoisting mechanism, tower bar mechanism, power head and drill rod mechanism are supported, wherein Integral operating platform is set to certainly On every trade walking system, rotation working platform is located at the top of Integral operating platform and can be rotated relative to Integral operating platform；Institute Support transfer bar mechanism is stated using multistage scalable hydraulic push rod, both ends are mutually cut with scissors with rotation working platform and tower bar mechanism respectively It connects, and supports between transfer bar mechanism and rotation working platform and tower bar mechanism also respectively by the second changed course hydraulic cylinder push rod, the One changed course hydraulic cylinder push rod is connected；Power head and drill rod mechanism are equipped with by steel wire rope hoisting mechanism in the tower bar mechanism.

Further, the support transfer bar mechanism includes non-telescope push rod tube and is successively set in non-telescope pushing rod sleeve Hydraulically extensible push rod tube and final stage hydraulically extensible push rod tube among at least one level inside pipe, wherein non-telescope push rod tube Tail end be connected with the center of rotation working platform by commutation section, the free end of final stage hydraulically extensible push rod tube passes through first Commutation connection is hinged with tower bar mechanism.

Further, the tower bar mechanism is multistage scalable hydraulic column rod structure comprising tower bar core bar and according to It is secondary to be set in outside tower bar core bar, and pass through the multi-stage column rod bush of hydraulic-driven；The bottom of the tower bar mechanism is equipped with support Bottom plate.

Further, the steel wire rope hoisting mechanism includes wirerope elevator rotating cylinder, deflecting guide wheel and wirerope, Middle wirerope elevator rotating cylinder is fixedly installed on Integral operating platform, and wirerope one end is fixed on wirerope elevator rotating cylinder, another One end is fixedly linked around the deflecting guide wheel in tower bar mechanism with power head rack, and the power head is installed on power head rack On.

Further, the power head includes the motor, speed reducer and hydraulic chuck being sequentially connected, motor peace Loaded in power head rack, the slow-speed shaft of speed reducer is connected by hydraulic chuck with drill rod mechanism.

Further, air deflector is equipped between the hydraulic chuck and drill rod mechanism, which includes air deflector Shell and rotational installation are in the shaft of air deflector interior of shell, and shaft one end is fixedly linked with power head, the other end and drilling rod Mechanism is fixedly linked；Further, the cavity between the shaft and air deflector shell is divided into slurries A points by sealing ring With room, high pressure gas distributor chamber and slurries B distributor chamber, three distributor chambers connect with slurries A adapter tube, gas adapter tube and slurries B respectively Pipe is connected, and is connected respectively by slurries A distribution pipe, gas service pipes and slurries B distribution pipe with the nozzle on drill rod mechanism.

Further, the drill rod mechanism includes at least one level hollow drill pipe and hollow brill being successively detachably connected Head, be equipped in the hollow drill pipe and hollow drill bit respectively with slurries A distribution pipe, gas service pipes and slurries B distribution pipe phase Slurries A delivery pipe, air shooter and the slurries B delivery pipe of connection, the slurries A delivery pipe, gas in the hollow drill bit are defeated Pipe and slurries B delivery pipe is sent to be connected respectively with slurries A nozzle, high pressure gas nozzle and slurries B nozzle, and slurries A nozzle, slurry Liquid B nozzle and high pressure gas nozzle, which are successively set with, forms three-casing structure.

Further, the upper end of the air deflector shaft is equipped with the connectiing shaft head cooperated with power head, and lower end is equipped with Disk is connect with the air deflector of hollow drill pipe cooperation, and the both ends of the hollow drill pipe are correspondingly provided with that drilling rod top connects disk and drilling rod lower part connects Disk；The two opposite side walls of the hollow drill bit are equipped with two groups of symmetrical nozzle assemblies, and the drill bit of end uses three wings Drill bit；The both ends of the Integral operating platform are respectively equipped with supporting leg and tower bar support frame.

A kind of jet grouting pile construction method of the invention, comprising the following steps:

Step 1: unloaded after the rotary churning pile machine is transported near construction site, it then will by voluntarily running gear Stake machine is moved to Specific construction position, and supporting leg is lowered into respective appropriate location, overall work table top is made to be in parallel, horizontal The state in face；

It is risen Step 2: support transfer bar mechanism is first vertically centainly rotated angular increment, then horizontally rotates one again Determine angle, final stage hydraulically extensible push rod tube first stretches out at this time, after then other hydraulically extensible push rod tubes at different levels stretch out step by step, Tower bar mechanism is sent to rotary-spraying construction position is prepared, then recycles the first changed course hydraulic cylinder push rod to be rotated into tower bar mechanism perpendicular To perpendicular to horizontal plane direction, and contact tower bar bottom with earth's surface firm stable；

Step 3: power head to be sling to the position that can install air deflector and drill rod mechanism by steel wire rope hoisting mechanism It sets, air deflector, hollow drill pipe and hollow drill bit is assembled respectively and are installed on power head, and make slurries A distribution pipe, gas distribution Pipe, slurries B distribution pipe pass through slurries A delivery pipe, air shooter and slurries B conveying in hollow drill pipe and hollow drill bit respectively Pipe is connected with corresponding nozzle；

Step 4: unclamping lifting wirerope, hollow drill bit is set to sink down into Horizon by gravity, then drive motor makes Drill bit is drilled down into the bottommost for needing rotary-spraying construction, is passed through super-pressure slurries A, super-pressure slurries B into air deflector at this time And high pressure gas, three kinds of media are with the pattern of high pressure annular airflow package slurries A, B along three bushing type nozzle transverse injections Out, cyclone nozzle is lifted upwards during rotating-spray, is stirred after the high-pressure jet whirl spraying of slurries A, B go out with the weak fault soil body It mixes to form a stirring body, when nozzle sprays superficial layer of the jet stream close to weak fault, stopping supplies and for slurry, by drilling rod machine Structure rotation extraction earth's surface；

Step 5: tower bar mechanism is moved to next rotation by support transfer bar mechanism or the Telescopic of tower bar mechanism Preventing slurry injection position carries out rotary jet grouting operation, the stirring body and a upper stirring body intersection constructed that rotary jet grouting is formed, After second stirring body rotary-spraying construction, successively carry out third, the 4th ... the constructing operation of n-th stirring body, When stirring body region when construct earliest has been cured certain bearing strength, rotary churning pile machine is moved integrally to the region, Drill rod mechanism is inserted into the region of not rotary-spraying construction, carries out rotary-spraying construction, until entire weak fault region obtains solidification and adds Gu.

Further, the slurries A is soil solidification cementitious material, and slurries B is the catalyst of slurries A, super-pressure The whirl spraying pressure of slurries A and super-pressure slurries B is 30MPa-50MPa, and optimal is 40MPa, and the whirl spraying pressure of high pressure gas is 0.8MPa-1.3MPa, optimal is 1MPa, and the ratio between the rotation speed of cyclone nozzle and pull rate are 0.5-1.0；To construct earliest Stirring body region solidification bearing strength be more than or equal to 0.5MPa when by rotary churning pile machine move integrally to the region carry out it is next The construction in region.

3. beneficial effect

Using technical solution provided by the invention, compared with prior art, there is following remarkable result:

(1) a kind of super-pressure rotary churning pile machine of the invention, by supporting transfer bar mechanism to be supported installation to tower bar mechanism, The support transfer bar mechanism is using multistage scalable hydraulic push rod, and it is installed on rotation working platform, by rotatably working Platform drives support transfer bar mechanism and tower bar mechanism and drill rod mechanism to be rotated, and carries out to the collapsing length of support transfer bar mechanism Adjust, so as to so that after single telephone-moving can rotary churning pile operating area area effectively increased, can increase substantially 5 times with On, and construction efficiency is also effectively improved.

(2) a kind of super-pressure rotary churning pile machine of the invention, the support transfer bar mechanism and rotation working platform and tower bar machine It is connected respectively by the second changed course hydraulic cylinder push rod, the first changed course hydraulic cylinder push rod between structure, is pushed away by the second changed course hydraulic cylinder The effect of bar positions vertical postrotational support transfer bar mechanism, by the effect of the first changed course hydraulic cylinder push rod to tower bar Mechanism and the angle of drill rod mechanism are adjusted, it is made to rotate to be vertical direction, consequently facilitating carrying out jet grouting pile construction.

(3) a kind of super-pressure rotary churning pile machine of the invention, tower bar mechanism is multistage scalable hydraulic column rod structure, and is bored Linkage includes at least one level hollow drill pipe being successively detachably connected and hollow drill bit, by the hydraulically extensible of tower bar promoted with And the series connection of multistage drilling rod guarantees the depth of single rotary-spraying construction so as to effectively increase the depth of single rotary-spraying construction Degree is more than 100 meters.

(4) a kind of super-pressure rotary churning pile machine of the invention is equipped with air deflector between the hydraulic chuck and drill rod mechanism, Cavity between the shaft of the air deflector and air deflector shell is divided into different distributor chambers by sealing ring, and different distributor chambers Fluid is delivered to different spray nozzles and ejection on drilling rod by conveyance conduit respectively, so as to so that a plurality of fluids and the soil body are made With effectively enhancing to the effect of the hydration and hardening of soft soil, and respectively fluid of different nature will not mutually be done before stirring Change fluid properties are disturbed, the generation of plugging phenomenon when combining it in advance is avoided, further ensure consolidating for the soil body Change effect.

(5) a kind of super-pressure rotary churning pile machine of the invention, slurries A nozzle, slurries B nozzle and height in the hollow drill bit Pressure gas nozzle, which is successively set with, forms three-casing structure, super-pressure slurries A, high-pressure water slurries B and three kinds of media of gas, with height The pattern transverse jet of annular airflow package slurries A, B is pressed to project, wherein slurries B is the catalyst of slurries A, their mixing Object has extremely strong aquation gelling function and effect, impact Unfavorable geology construction, in high pressure cylinder slurries and its outer ring around gas Under the collective effect of stream, destroy Unfavorable geology construction, rigid body, half viscous body, viscous body impact agitation energy significantly increase, To further improve solidification effect.

(6) construction method of a kind of super-pressure rotary churning pile machine of the invention, is optimized by the structure to rotary churning pile machine Design, so as to effectively expand after single telephone-moving can rotary churning pile operating area area and single rotary-spraying construction depth, greatly Construction efficiency is improved greatly.The present invention may make slurries A to be excited and be catalyzed by slurries B by the way of super-pressure rotary jet grouting It more effectively, is more quickly sufficiently mixed with soft soil afterwards, and the reaction of spot polymers, hydration reaction and pozzolanic reaction, So that entire soft foundation is solidified and hardened, there is the use value for being further developed as construction land.

(7) a kind of super-pressure jet grouting pile construction method of the invention, the construction area when rotary churning pile machine is in a certain position When reaching maximum construction area, rotary churning pile machine is driven to move integrally to cured region by voluntarily running gear, so as to Again rotary-spraying construction is carried out to next non-construction area, operation is relatively simple, further improves construction efficiency.

(8) a kind of super-pressure jet grouting pile construction method of the invention is pumped in whirl spraying using super-pressure slurries, cuts slurries The speed of soil body jet stream increases, and range increases, and stirring radius can achieve 5 meters or more, and operating efficiency improves.In addition, in addition to changing The series connection operation of multistage drilling rod is outer, the everything of super-pressure rotary churning pile machine can be distributed by hydraulic station it is hydraulic into Row driving, high degree of automation.

Detailed description of the invention

Fig. 1 is a kind of overall structure diagram of super-pressure rotary churning pile machine of the invention；

Fig. 2 is the structural schematic diagram of current divider of the invention；

Fig. 3 is the structural schematic diagram of mesoporous drilling rod of the invention；

Fig. 4 is the structural schematic diagram of hollow drill bit of the invention；

Fig. 5 is the structural schematic diagram of power head rack of the invention.

Label declaration in attached drawing:

1, the first deflecting guide wheel；2, tower bar core bar；3, wirerope；4, tower bar casing；5, lifting lug；6, power head rack；7, Motor；8, speed reducer；9, hydraulic chuck；10, support baseboard；11, the first commutation connection；12, final stage hydraulically extensible pushing rod sleeve Pipe；13, the second commutation connection；14, the first changed course hydraulic cylinder push rod；15, intermediate hydraulically extensible push rod tube；16, non-telescope to push away Rod bush；17, third commutation connection；18, the second changed course hydraulic cylinder push rod；19, front end tower bar support frame；20, rotary work Platform；21, rotation support；22, supporting table；23, front support leg；24, voluntarily running gear；25, rear end supporting leg；26, whole Workbench；27, wirerope elevator rotating cylinder；28, rear end tower bar support frame；29, hydraulic workstation；30, the second deflecting guide wheel；31, Support stress slot；311, connectiing shaft head；312, shaft；313, air deflector shell；314, upper bearing；315, sealing ring；316, Slurries A distributor chamber；317, high pressure gas distributor chamber；318, gas is taken over；319, gas service pipes；320, slurries B distributor chamber； 321, lower bearing；322, air deflector connects disk；323, fixing bolt；324, slurries B distribution pipe；325, slurries B takes over；326, slurries A distribution pipe；327, slurries A takes over；328, drilling rod top connects disk；329, drilling rod shell；330, drilling rod air shooter；331, it bores Bar slurries A delivery pipe；332, drilling rod slurries B delivery pipe；333, drilling rod lower part connects disk；334, drill bit connects disk；335, drill bit slurries B Delivery pipe；336, drill bit slurries A delivery pipe；337, drill bit air shooter；338, drill bit shell；339, high pressure gas nozzle； 340, slurries B nozzle；341, slurries A nozzle；342, drill bit.

Specific embodiment

To further appreciate that the contents of the present invention, now in conjunction with the drawings and specific embodiments, the present invention is described in detail.

Embodiment 1

As shown in Figure 1, a kind of super-pressure rotary churning pile machine of the present embodiment, including voluntarily running gear 24, Integral operating platform 26, rotation working platform 20, support transfer bar mechanism, steel wire rope hoisting mechanism, tower bar mechanism, power head and drill rod mechanism, wherein Integral operating platform 26 is set in voluntarily running gear 24, entire rotary churning pile machine can be driven to carry out by voluntarily running gear 24 It is mobile, consequently facilitating replacement construction area.The rotation working platform 20 is located at the top of Integral operating platform 26 and can be relative to Integral operating platform 26 is rotated, support transfer bar mechanism using multistage scalable hydraulic push rod, both ends respectively with rotary work Make platform 20 and tower bar mechanism is hinged, and supports and also pass through respectively between transfer bar mechanism and rotation working platform 20 and tower bar mechanism The second changed course changed course hydraulic cylinder push rod 14 of hydraulic cylinder push rod 18, first is connected.Support push rod is driven by rotation working platform 20 Mechanism and tower bar mechanism and drill rod mechanism are rotated, and the collapsing length of support transfer bar mechanism is adjusted, so as to After making single telephone-moving can rotary churning pile operating area area effectively increased, and be conducive to improve construction efficiency.Wherein, second Changed course hydraulic cylinder push rod 18 is used to position vertical postrotational support transfer bar mechanism, and the first changed course hydraulic cylinder push rod 14 is used It is adjusted in the angle to tower bar mechanism and drill rod mechanism, it is made to rotate to be vertical direction, applied consequently facilitating carrying out rotary churning pile Work.Power head and drill rod mechanism are equipped with by steel wire rope hoisting mechanism in the tower bar mechanism of the present embodiment, by controlling steel wire Rope hoisting mechanism moves up and down power head and drill rod mechanism along tower bar mechanism length direction, applies to carry out rotary churning pile Work.

Embodiment 2

A kind of super-pressure rotary churning pile machine of the present embodiment, structure is substantially with embodiment 1, and difference essentially consists in: this reality The support transfer bar mechanism for applying example includes non-telescope push rod tube 16 and is successively set in inside non-telescope push rod tube 16 at least Hydraulically extensible push rod tube 15 and final stage hydraulically extensible push rod tube 12 among level-one, wherein the tail end of non-telescope push rod tube 16 It is connected by commutation section with the center of rotation working platform 20, the free end of final stage hydraulically extensible push rod tube 12 is changed by first It is hinged to connection 11 with tower bar mechanism.In the present embodiment the both ends of the first changed course hydraulic cylinder push rod 14 respectively with final stage is hydraulic stretches Contracting push rod tube 12 and tower bar mechanism are hinged, to allow tower bar after reaching and needing the position of operation, make to stretch out Tower bar rotates within the scope of 90 degree, i.e., is perpendicular to ground direction by level transformation angle.The second changed course hydraulic cylinder push rod 18 both ends are hinged with rotation working platform 20 and non-telescope push rod tube 16 respectively, wherein final stage hydraulically extensible push rod tube 12 with non-telescope push rod tube 16 on respectively correspond equipped with second commutation connection 13, third commutation connection 17.

Embodiment 3

A kind of super-pressure rotary churning pile machine of the present embodiment, structure is substantially with embodiment 2, and difference essentially consists in: this reality The tower bar mechanism of example is applied as multistage scalable hydraulic column rod structure comprising tower bar core bar 2 and be successively set in outside tower bar core bar 2 Portion, and pass through the multi-stage column rod bush 4 of hydraulic-driven, it is adjusted by the collapsing length to tower bar mechanism, so as to have Effect increases construction depth.Specifically, tower bar core bar 2 first stretches out after tower bar is vertical, other grade of hydraulic-driven is then successively stretched out Scalable tower bar casing 4 is to required tower bar height.The bottom of the tower bar mechanism is equipped with support baseboard 10, therefore works as and pass through Voluntarily running gear 24 transports rotary churning pile machine to region to be onstructed, and when tower bar mechanism is rotated to vertical state, Ke Yitong It crosses support baseboard 10 to be supported tower bar mechanism, to guarantee the stability of its structure.The steel wire rope hoisting mechanism of the present embodiment Including wirerope elevator rotating cylinder 27, deflecting guide wheel and wirerope 3, wherein wirerope elevator rotating cylinder 27 is fixedly installed in overall work On platform 26,3 one end of wirerope is fixed on wirerope elevator rotating cylinder 27, and the other end is led around the second deflecting in tower bar mechanism Wheel 30 and the first deflecting guide wheel 1 are fixedly linked with the lifting lug 5 in power head rack 6, and the power head is installed on power head rack 6 On.The power head includes the motor 7, speed reducer 8 and hydraulic chuck 9 being sequentially connected, and motor 7 is installed on power head rack 6 On, the slow-speed shaft of speed reducer 8 is connected by hydraulic chuck 9 with drill rod mechanism.When by the first changed course hydraulic cylinder push rod 14 by tower After linkage rotates to be vertical state, power head machine can be sling and put down along tower bar mechanism direction by steel wire rope hoisting mechanism Frame, so that drill rod mechanism be driven to move up and down.

Embodiment 4

A kind of super-pressure rotary churning pile machine of the present embodiment, structure is substantially with embodiment 3, and difference essentially consists in: this reality The voluntarily running gear 24 for applying example uses crawler travelling device (existing crawler belt moving structure), and the front end of Integral operating platform 26 is set There are front end tower bar support frame 19 (carrying out when tower bar mechanism is fallen to it horizontally-supported) and front support leg 23, Integral operating platform 26 Rear end be equipped with rear end tower bar support frame 28 and rear end supporting leg 25, and Integral operating platform 26 be equipped with supporting table 22, supporting table Rotation support 21 is installed, rotation working platform 20 is installed on Integral operating platform 26 by 21 rotation of rotation support, i.e., on 22 Rotation working platform 20 can be rotated left and right relative to Integral operating platform 26 (can turn between rotation support 21 and supporting table 22 It is dynamic to be connected, it specifically rotates driving method and uses the prior art, be not so limited, for example driven using servo motor, Rotation working platform 20 is driven to be rotated relative to Integral operating platform 26 as long as can be realized).It is hydraulic in the present embodiment Work station 29 is fixedly installed on rotation working platform 20, can be rotated with rotation working platform 20.

Embodiment 5

A kind of super-pressure rotary churning pile machine of the present embodiment, structure is substantially with embodiment 4, and difference essentially consists in: this reality Apply between the hydraulic chuck 9 of example and drill rod mechanism be equipped with air deflector, as shown in Fig. 2, the air deflector include air deflector shell 313 and (inner upper end of air deflector shell 313 and lower end are respectively equipped with the shaft 312 for being rotatablely installed inside air deflector shell 313 Portion's bearing 314 and lower bearing 321, shaft 312 are rotatablely installed in upper bearing 314 and lower bearing 321), shaft 312 1 End is fixedly linked by the hydraulic chuck 9 of connectiing shaft head 311 and power head, and (hydraulic chuck 9 clamps connectiing shaft head 311, makes water conservancy diversion The shaft 312 and power head group of device are combined into the entirety that can be rotated together), the other end is fixedly linked with drill rod mechanism.This Cavity in embodiment between shaft 312 and air deflector shell 313 is divided into slurries A distributor chamber 316, height by sealing ring 315 Press gas distributing chamber 317 and slurries B distributor chamber 320, three distributor chambers respectively with slurries A adapter tube 327, gas adapter tube 318 and starch Liquid B adapter tube 325 is connected, and passes through slurries A distribution pipe 326, gas service pipes 319 and slurries B distribution pipe 324 and drilling rod machine respectively Nozzle on structure is connected.

The drill rod mechanism of the present embodiment includes at least one level hollow drill pipe being successively detachably connected and hollow drill bit, in conjunction with Fig. 3, Fig. 4, be equipped in the hollow drill pipe and hollow drill bit respectively with slurries A distribution pipe 326, gas service pipes 319 and slurry Slurries A delivery pipe, air shooter and the slurries B delivery pipe that liquid B distribution pipe 324 is connected, the slurries A in the hollow drill bit Delivery pipe, air shooter and slurries B delivery pipe respectively with slurries A nozzle 341, high pressure gas nozzle 339 and slurries B nozzle 340 are connected, and slurries A nozzle 341, slurries B nozzle 340 and high pressure gas nozzle 339 are successively set with and form three-casing structure.

Specifically, hollow drill pipe at different levels includes drilling rod shell 329 in the present embodiment, drilling rod gas is equipped with inside hollow drill pipe Body delivery pipe 330, drilling rod slurries A delivery pipe 331 and drilling rod slurries B delivery pipe 332, the hollow drill bit includes drill bit shell 338, hollow drill bit is interior to be equipped with drill bit air shooter 337, drill bit slurries A delivery pipe 336 and drill bit slurries B delivery pipe 335.Institute The lower end for stating air deflector shaft 312 is equipped with the air deflector cooperated with hollow drill pipe and connects disk 322, the both ends difference of the hollow drill pipe It is correspondingly provided with that drilling rod top connects disk 328 and drilling rod lower part connects disk 333, and the upper end of hollow drill bit is equipped with and connects disk with drilling rod lower part 333 drill bits matched connect disk 334.It is above-mentioned it is mutually matched connect disk and respectively correspond be processed as mutually matched convex surface and concave surface and tie Structure, and by seal polyurethane washer be sealed it is connected.The two opposite side walls of hollow drill bit are equipped with symmetrical in the present embodiment Two groups of nozzle assemblies of Relative distribution, drill bit air shooter 337, drill bit slurries A delivery pipe 336 and drill bit slurries B delivery pipe 335 are connected by the way that a horizontal pipeline is corresponding with the nozzle of hollow drill bit two sides respectively, and the drill bit 342 of hollow drill bit bottom end uses Three-wing bit.

Embodiment 6

A kind of super-pressure rotary churning pile machine of the present embodiment, structure is with embodiment 5, using the superelevation pressure rotary-spraying of the present embodiment Stake machine, construction method the following steps are included:

Step 1: being unloaded after being transported the rotary churning pile machine near construction site with trailer, then by voluntarily walking Stake machine is moved to Specific construction position by system 24, and hydraulic lifting supporting leg is lowered into respective appropriate location, makes overall work 26 face of platform is in the state of parallel water plane；

It is risen Step 2: support transfer bar mechanism is first vertically centainly rotated angular increment, then horizontally rotates one again Determine angle, final stage hydraulically extensible push rod tube 12 first stretches out at this time, and then other hydraulically extensible push rod tubes at different levels stretch out step by step Afterwards, tower bar mechanism is sent to rotary-spraying construction position is prepared, the first changed course hydraulic cylinder push rod 14 is then recycled to revolve tower bar mechanism It changes into vertically perpendicular to horizontal plane direction, and contacts tower bar bottom with earth's surface firm stable；

Step 3: power head to be sling to the position that can install air deflector and drill rod mechanism by steel wire rope hoisting mechanism It sets, air deflector, hollow drill pipe and hollow drill bit is assembled respectively and are installed on power head, and make slurries A distribution pipe 326, gas Distribution pipe 319, slurries B distribution pipe 324 pass through hollow drill pipe and the slurries A delivery pipe in hollow drill bit, air shooter respectively It is connected with slurries B delivery pipe with corresponding nozzle.

Specifically, hydraulic chuck 9 is first fixed the slow-speed shaft of the top shaft of air deflector and speed reducer 8 is concentric, and use liquid Pressure clamps, while air deflector is also fixed on the support stress in power head rack by the fixing bolt 323 on air deflector shell 313 In slot 31 (as shown in Figure 5), to realize the fixation of air deflector shell 313, air deflector shell 313 can also be with tower bar mechanism stationary phase Even, as long as realizing that it is fixedly mounted.The top for connecing disk and first order drilling rod of air deflector lower end connects disk and connects in disk by two Between polyurethane seal gasket and screw rod fastened and sealed, and realize the high-pressure gas pipelines in air deflector, superelevation mud jacking High pressure gas, super-pressure slurries A pipeline, superelevation mud jacking in liquid A pipeline, super-pressure slurries B pipeline and first order hollow drill pipe Liquid B pipeline is connected, and during power head is constantly sling, is connect the top of second level hollow drill pipe using connecting screw The lower part of disk, polyurethane seal gasket and drilling rod in the first order connects disk and is connected and sealed, and keeps the high pressure in two drilling rods Gas, super-pressure slurries A pipeline, super-pressure slurries B pipeline communicate respectively, after in the above way connecting final stage hollow drill pipe, then It the lower part of final stage hollow drill pipe is connect into disk connects disk with the top of hollow drill bit and be connected, make the high pressure gas in air deflector in rotation axis Body pipeline, super-pressure slurries A pipeline, super-pressure slurries B pipeline are connected respectively on two group of three bushing type nozzle on drill bit, China and foreign countries' ring spray mouth is high pressure gas nozzle, and sublevel is super-pressure slurries B nozzle, and intercooler core is super-pressure slurries A nozzle.

Step 4: unclamping lifting wirerope 3, hollow drill bit is set to sink down into Horizon by gravity, then drive motor 7 It is drilled down into drill bit 342 to the bottommost for needing rotary-spraying construction, is passed through super-pressure slurries A, super-pressure into air deflector at this time Slurries B and high pressure gas, three kinds of media are lateral along three bushing type nozzles with the pattern of high pressure annular airflow package slurries A, B It ejects, the whirl spraying pressure of super-pressure slurries A and super-pressure slurries B are 30-50MPa, the preferred 40MPa of the present embodiment, high pressure gas The whirl spraying pressure of body is 0.8MPa-1.3MPa, the preferred 1MPa of the present embodiment, and cyclone nozzle is mentioned upwards during rotating-spray It draws, the ratio between rotation speed and pull rate of cyclone nozzle are 0.5-1.0, and the high-pressure jet whirl spraying of slurries A, B go out rear and weak base Plinth soil shear failure forms a stirring body, when nozzle sprays superficial layer of the jet stream close to weak fault, it will see that whirl spraying is penetrated The perturbation action to surface is flowed, stop gas supply at this time and for slurry, drill rod mechanism is revolved into extraction earth's surface.

The slurries A is soil solidification cementitious material, and slurries B is the catalyst of slurries A, specifically, in the present embodiment Slurries A uses No. 32.5 portland slag cements, and slurries B uses waterglass, their mixture has extremely strong gelatification Effect, portland slag cement can more effectively, be more quickly sufficiently mixed with soft soil after waterglass is catalyzed, and be occurred The reaction of ground polymers, hydration reaction and pozzolanic reaction have further so that entire soft foundation is solidified and hardened Exploitation is the use value of industrial construction land used and building site.In addition, in high pressure cylinder slurries and its outer ring circling gas flow Collective effect under, destroy Unfavorable geology construction, rigid body, half viscous body, viscous body impact agitation energy significantly increase, general Slurries are stirred with the soil body in weak fault and mix.

Step 5: tower bar mechanism is moved to next rotation by support transfer bar mechanism or the Telescopic of tower bar mechanism Preventing slurry injection position carries out rotary jet grouting operation, the stirring body and a upper stirring body intersection constructed that rotary jet grouting is formed, After second stirring body rotary-spraying construction, successively carry out third, the 4th ... the constructing operation of n-th stirring body, (it is more than or equal to 0.5MPa) when stirring body region when construct earliest has been cured certain bearing strength, rotary churning pile machine is whole Body is moved to the region, and drill rod mechanism is inserted into the region of not rotary-spraying construction, carries out rotary-spraying construction, until entire weak fault Region obtains solidification and reinforces.

When the depth that whirl spraying operation needs is more than the height after scalable tower bar casing all stretches out, can divide once with The upper tandem compound for carrying out drilling rod, i.e., after the concatenated drill bit test a to depth of first time drilling rod, by level-one drilling rod and water conservancy diversion Device disengages, and carries out second of drilling rod series connection, after being connected in series to a new whirl spraying depth, drilling rod is close by connecing disk after connecting twice Envelope is connected, and for the whirl spraying hollow drill bit of high pressure jet grouting with the series connection of borer drill rod, can extend to depth is more than 100m's Soft soil region, when whirl spraying when operation, the pull rate of whirl spraying hollow drill bit is 0.3-0.5m/min.

Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution Similar frame mode and embodiment, are within the scope of protection of the invention.

Claims (10)

1. a kind of super-pressure rotary churning pile machine, it is characterised in that: including voluntarily running gear (24), Integral operating platform (26), rotation Formula workbench (20), support transfer bar mechanism, steel wire rope hoisting mechanism, tower bar mechanism, power head and drill rod mechanism, wherein whole work Make platform (26) to be set in voluntarily running gear (24), rotation working platform (20) is located at the top of Integral operating platform (26) and can It is rotated relative to Integral operating platform (26)；The support transfer bar mechanism is using multistage scalable hydraulic push rod, both ends point It is not hinged with rotation working platform (20) and tower bar mechanism, and supports transfer bar mechanism and rotation working platform (20) and tower bar machine Also it is connected respectively by the second changed course hydraulic cylinder push rod (18), the first changed course hydraulic cylinder push rod (14) between structure；The tower bar machine Power head and drill rod mechanism are equipped with by steel wire rope hoisting mechanism on structure.

2. a kind of super-pressure rotary churning pile machine according to claim 1, it is characterised in that: the support transfer bar mechanism includes nothing Telescopic putter casing (16) and at least one level centre hydraulically extensible push rod for being successively set in non-telescope push rod tube (16) inside Casing (15) and final stage hydraulically extensible push rod tube (12), wherein the tail end of non-telescope push rod tube (16) passes through commutation section and rotation The center of rotatable workbench (20) is connected, and the free end of final stage hydraulically extensible push rod tube (12) connects (11) by the first commutation Mechanism is hinged with tower bar.

3. a kind of super-pressure rotary churning pile machine according to claim 1, it is characterised in that: the tower bar mechanism is that multistage can Telescopic hydraulic tower bar structure comprising tower bar core bar (2) and to be successively set in tower bar core bar (2) external, and pass through hydraulic-driven Multi-stage column rod bush (4)；The bottom of the tower bar mechanism is equipped with support baseboard (10).

4. a kind of super-pressure rotary churning pile machine according to any one of claim 1-3, it is characterised in that: the wirerope Hoisting mechanism includes wirerope elevator rotating cylinder (27), deflecting guide wheel and wirerope (3), and wherein wirerope elevator rotating cylinder (27) is fixed It is installed on Integral operating platform (26), wirerope (3) one end is fixed on wirerope elevator rotating cylinder (27), and the other end bypasses tower Deflecting guide wheel on linkage is fixedly linked with power head rack (6), and the power head is installed on power head rack (6).

5. a kind of super-pressure rotary churning pile machine according to any one of claim 1-3, it is characterised in that: the power head Including the motor (7), speed reducer (8) and hydraulic chuck (9) being sequentially connected, motor (7) is installed on power head rack (6) On, the slow-speed shaft of speed reducer (8) is connected by hydraulic chuck (9) with drill rod mechanism.

6. a kind of super-pressure rotary churning pile machine according to any one of claim 1-3, it is characterised in that: the hydraulic clip Air deflector is equipped between head (9) and drill rod mechanism, which includes air deflector shell (313) and rotational installation in outside air deflector The internal shaft (312) of shell (313), shaft (312) one end are fixedly linked with power head, the other end and drill rod mechanism stationary phase Even；Further, the cavity between the shaft (312) and air deflector shell (313) is divided into slurry by sealing ring (315) Liquid A distributor chamber (316), high pressure gas distributor chamber (317) and slurries B distributor chamber (320), three distributor chambers connect with slurries A respectively Pipe (327), gas adapter tube (318) are connected with slurries B adapter tube (325), and are distributed respectively by slurries A distribution pipe (326), gas Pipe (319) and slurries B distribution pipe (324) are connected with the nozzle on drill rod mechanism.

7. a kind of super-pressure rotary churning pile machine according to claim 6, it is characterised in that: the drill rod mechanism includes successively At least one level hollow drill pipe and hollow drill bit being detachably connected, be equipped in the hollow drill pipe and hollow drill bit respectively with slurry Slurries A delivery pipe that liquid A distribution pipe (326), gas service pipes (319) and slurries B distribution pipe (324) are connected, gas conveying Pipe and slurries B delivery pipe, slurries A delivery pipe, air shooter and slurries B delivery pipe in the hollow drill bit respectively with slurries A nozzle (341), high pressure gas nozzle (339) and slurries B nozzle (340) are connected, and slurries A nozzle (341), slurries B nozzle (340) and high pressure gas nozzle (339) is successively set with and forms three-casing structure.

8. a kind of super-pressure rotary churning pile machine according to claim 7, it is characterised in that: the air deflector shaft (312) Upper end is equipped with the connectiing shaft head (311) cooperated with power head, and lower end is equipped with the air deflector cooperated with hollow drill pipe and connects disk (322), the both ends of the hollow drill pipe are correspondingly provided with that drilling rod top connects disk (328) and drilling rod lower part connects disk (333)；It is described hollow The two opposite side walls of drill bit are equipped with two groups of symmetrical nozzle assemblies, and the drill bit (342) of end uses three-wing bit；Institute The both ends for stating Integral operating platform (26) are respectively equipped with supporting leg and tower bar support frame.

9. a kind of jet grouting pile construction method, which is characterized in that use super-pressure rotary churning pile of any of claims 1-8 Machine, comprising the following steps:

Step 1: unloaded after the rotary churning pile machine is transported near construction site, it then will by voluntarily running gear (24) Stake machine is moved to Specific construction position, and supporting leg is lowered into respective appropriate location, and Integral operating platform (26) face is made to be in parallel The state of horizontal plane；

It is risen Step 2: support transfer bar mechanism is first vertically centainly rotated angular increment, then horizontally rotates certain angle again Degree, final stage hydraulically extensible push rod tube (12) first stretches out at this time, after then other hydraulically extensible push rod tubes at different levels stretch out step by step, Tower bar mechanism is sent to rotary-spraying construction position is prepared, the first changed course hydraulic cylinder push rod (14) is then recycled to rotate tower bar mechanism At vertically perpendicular to horizontal plane direction, and contact tower bar bottom with earth's surface firm stable；

Step 3: power head is sling to the position that can install air deflector and drill rod mechanism by steel wire rope hoisting mechanism, it will Air deflector, hollow drill pipe and hollow drill bit assemble be installed on power head respectively, and make slurries A distribution pipe (326), gas distribution It manages (319), slurries B distribution pipe (324) and passes through hollow drill pipe and the slurries A delivery pipe in hollow drill bit, air shooter respectively It is connected with slurries B delivery pipe with corresponding nozzle；

Step 4: unclamping lifting with wirerope (3), hollow drill bit is set to sink down into Horizon by gravity, then drive motor (7) It is drilled down into drill bit (342) to the bottommost for needing rotary-spraying construction, is passed through super-pressure slurries A, superelevation into air deflector at this time Mud jacking liquid B and high pressure gas, three kinds of media are horizontal along three bushing type nozzles with the pattern of high pressure annular airflow package slurries A, B To ejecting, cyclone nozzle is lifted upwards during rotating-spray, the high-pressure jet whirl spraying of slurries A, B go out rear and weak fault Soil shear failure forms a stirring body, and when nozzle sprays superficial layer of the jet stream close to weak fault, stopping supplies and for slurry, will Drill rod mechanism rotation extraction earth's surface；

Step 5: tower bar mechanism is moved to next whirl spraying and is infused by support transfer bar mechanism or the Telescopic of tower bar mechanism It starches position and carries out rotary jet grouting operation, the stirring body and a upper stirring body intersection constructed that rotary jet grouting is formed, second After a stirring body rotary-spraying construction, successively carry out third, the 4th ... the constructing operation of n-th stirring body, to earliest When the stirring body region of construction has been cured certain bearing strength, rotary churning pile machine is moved integrally to the region, by drilling rod Mechanism is inserted into the region of not rotary-spraying construction, carries out rotary-spraying construction, until entire weak fault region obtains solidification and reinforces.

10. a kind of jet grouting pile construction method according to claim 9, it is characterised in that: the slurries A is soil solidification use Cementitious material, slurries B are the catalyst of slurries A, and the whirl spraying pressure of super-pressure slurries A and super-pressure slurries B is 30MPa- 50MPa, optimal is 40MPa, and the whirl spraying pressure of high pressure gas is 0.8MPa-1.3MPa, and optimal is 1MPa, and the rotation of cyclone nozzle The ratio between speed and pull rate are 0.5-1.0；The solidification bearing strength of stirring body region to construct earliest is more than or equal to Rotary churning pile machine is moved integrally to the region to the construction for carrying out subsequent region when 0.5MPa.