CN113107370A - Drilling tool for cement-soil mixing pile between rigid piles and using method thereof - Google Patents
Drilling tool for cement-soil mixing pile between rigid piles and using method thereof Download PDFInfo
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- CN113107370A CN113107370A CN202110395485.9A CN202110395485A CN113107370A CN 113107370 A CN113107370 A CN 113107370A CN 202110395485 A CN202110395485 A CN 202110395485A CN 113107370 A CN113107370 A CN 113107370A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
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- 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
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- 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
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- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/327—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being pivoted about a longitudinal axis
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Geochemistry & Mineralogy (AREA)
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- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a drilling tool for a cement mixing pile among rigid piles and a using method thereof. The using method comprises the following steps: and positioning and paying off, then driving the drilling tool to rotate to smash the undisturbed soil and mix and soften the undisturbed soil with the curing agent, and finally lifting the stirring rod after the drilling tool is constructed to the designed depth. By adopting the drilling tool for the cement-soil mixing pile among the rigid piles and the using method thereof, the cement-soil mixing pile after diameter expansion can be lapped with the rigid supporting pile, and the problem that the cement-soil mixing pile and the rigid supporting pile can not be lapped is solved.
Description
Technical Field
The invention belongs to the field of drilling tools and application methods thereof, and particularly relates to a drilling tool for a cement-soil mixing pile between rigid piles and an application method thereof.
Background
The water interception curtain is an important structural measure in the field of foundation pit groundwater control, and in order to ensure the safety of foundation pits and surrounding buildings and the smooth construction of buildings, people often arrange the water interception curtain at the periphery of the foundation pits to prevent underground water outside the foundation pits from flowing into the foundation pits, the water interception curtain is usually formed by connecting columnar concretes formed by stirring cement paste and soil, and the most common construction forms of the water interception curtain at present are a high-pressure jet grouting pile method and a cement soil stirring pile method.
The high-pressure jet grouting pile is characterized in that cement slurry is sprayed into a soil layer through a high-pressure rotating nozzle, and a soil body is cut through high-pressure jet flow, so that the cement slurry and the soil body are mixed to form a continuously lapped cement reinforcing body. Its advantages are less occupied ground, less vibration, low noise and high adaptability to stratum. When the curtain between piles is used for supporting the foundation pit pile anchor, the high-pressure jet flow of the curtain can wash the surface of a pile body when passing through the hard concrete supporting pile, so that the cement-soil pile and the supporting pile form effective lap joint, and the curtain has excellent applicability. But because the high-pressure jet flow has huge pulp output, the waste is serious, the cost is higher, and the environment is easily polluted.
The cement-soil mixing pile is formed by injecting cement paste prepared in advance into a hole, and forcibly mixing the cement paste with surrounding soft soil by rotating a mixing blade to form a cement reinforcing body. Its advantages are simple construction, low cost and high pile-forming quality. However, for the foundation pit supported by the pile anchor, the overlap joint of the curtain pile and the supporting pile cannot be realized due to the conflict between the stirring blade and the supporting pile of the concrete foundation pit, and only one circle of cement-soil stirring pile curtain can be additionally constructed on the periphery of the supporting pile, so that the waste of materials and construction period is caused.
Disclosure of Invention
The invention aims to provide a drilling tool for a cement-soil mixing pile among rigid piles and a using method thereof, and aims to solve the technical problems that the cement-soil mixing pile cannot be overlapped with a rigid support pile, so that material waste and construction period delay are caused.
In order to solve the technical problems, the concrete technical scheme of the drilling tool for the cement-soil mixing pile between the rigid piles and the using method thereof is as follows:
the drilling tool for the cement mixing pile between the rigid piles comprises a mixing rod, a slurry conveying pipeline is arranged inside the mixing rod and used for conveying a curing agent, a slurry outlet is formed in the lower end of the mixing rod, the curing agent enters the pile hole through the slurry outlet, a hole guiding assembly is arranged on the slurry outlet and comprises mixing blades and mixing teeth arranged on the lower portions of the mixing blades, the mixing blades are fixedly connected to the outer side of the mixing rod, a hole expanding assembly is arranged on the hole guiding assembly and can expand the pile hole after entering the pile hole, and the cement mixing pile after expansion can be in lap joint with the rigid support pile.
Furthermore, the diameter expanding assembly comprises diameter expanding blades and a transmission device, the transmission device is fixedly connected with the stirring rod, and the diameter expanding blades can synchronously move towards each other through the transmission device.
Furthermore, the transmission device comprises transmission shafts, transmission chains and cross beams, wherein the two transmission shafts are movably connected between the two cross beams, the two groups of expanding blades are respectively connected with the two transmission shafts, and the expanding blades and the transmission shafts synchronously rotate.
In a first preferred configuration of the present invention, the transmission device further includes a third transmission shaft movably connected between the two transmission shafts connected to the diameter-expanding blades and between the two cross members, and the third transmission shaft is connected to one of the two transmission shafts through a transmission chain and the other of the two transmission shafts through a gear.
In a second preferred configuration of the present invention, the two transmission shafts connected to the diameter-expanding blades are connected to each other by a transmission chain having a 8-shape.
As a third preferred structure of the invention, the transmission device is in a circular structure, four transmission shafts are movably connected in the circular structure, two transmission shafts connected with the diameter-expanding blades are connected with the four transmission shafts through transmission chains, and the two transmission shafts connected with the diameter-expanding blades realize synchronous opposite movement through transmission between the transmission shafts.
Furthermore, two groups of expanding assemblies are arranged on the stirring rod at a certain interval from top to bottom, the cross beams of the two groups of expanding assemblies are perpendicular to each other, and the plurality of groups of expanding assemblies are arranged, so that the undisturbed soil on the surface of the rigid support pile can be fully mixed with the cement soil more quickly and better.
As for the use method of the drilling tool for the cement-soil mixing pile among the rigid piles, the use method for solving the problems comprises the following steps: and positioning and paying off, driving the drilling tool to rotate to smash the undisturbed soil and mix and soften the undisturbed soil with the curing agent, lifting the stirring rod after the drilling tool is constructed to the designed depth, and positioning and paying off, wherein the outer edge of the rigid support pile is positioned outside the range of the radius of gyration of the stirring blade within the range of the radius of gyration of the expanding blade.
Further, when the positioning and paying-off are carried out, the distance between the outer edge of the stirring blade and the outer edge of the rigid pile is 100 mm.
The drilling tool is used as an improvement of the use method of the cement soil mixing pile drilling tool among rigid piles, the mixing teeth and the mixing blades are led into the holes in advance, and undisturbed soil is smashed and mixed and softened with a curing agent, so that the diameter expanding assembly is easier to feed into the holes; after the expanding component enters the pile hole, the original soil body outside the pile body of the rigid support pile and the curing agent are uniformly stirred.
Furthermore, after the drilling tool is constructed to the designed depth and the stirring rod is lifted, repeated stirring can be carried out, so that the undisturbed soil and the curing agent are mixed more uniformly.
By the drilling tool for the cement-soil mixing pile among the rigid piles and the using method thereof, the cement-soil mixing pile and the rigid support pile form effective lap joint, the waste of materials is reduced, the cost is further saved, and the construction period is shortened.
Drawings
FIG. 1 is a schematic structural view of a drilling tool for a cement-soil mixing pile between rigid piles according to the present invention;
FIG. 2 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 3 is a schematic structural view of a transmission according to a first embodiment of the present invention;
FIG. 4 is a schematic view of the transmission according to the first embodiment of the present invention;
FIG. 5 is a schematic structural view of a transmission according to a second embodiment of the present invention;
FIG. 6 is a schematic view of the transmission of a transmission according to a second embodiment of the present invention;
FIG. 7 is a schematic structural view of a third embodiment of the present invention;
FIG. 8 is a schematic structural view of a transmission according to a third embodiment of the present invention;
FIG. 9 is a schematic diagram of the construction of the present invention in which a soil-cement mixing pile and a rigid support pile are lapped.
Detailed Description
For a better understanding of the objects, structure and function of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
As shown in fig. 1, a drill for a rigid inter-pile cement-soil mixing pile according to the present invention includes: the stirring rod (1) can rotate under the drive of a drive device at the upper end, a slurry conveying pipeline is arranged inside the stirring rod and used for conveying a curing agent, a slurry outlet (4) is formed in the lower end of the stirring rod (1), the curing agent enters a pile hole through the slurry outlet (4), a hole guiding component (3) is arranged on the slurry outlet (4), the hole guiding component (3) comprises a stirring blade (31), the stirring blade (31) is fixedly connected to the outer side of the stirring rod (1), the stirring blade (31) is in a discontinuous spiral shape or can be in other structures which can be used for stirring, such as a plurality of rod pieces and the like which are vertically arranged with the stirring rod (1), the stirring rod (31) is preferably in a spiral shape, the stirring teeth (32) are arranged at the lower part of the stirring blade (31), the stirring rod (1) rotates downwards under the drive of the drive device in the construction process, and the hole guiding component (3) can smas, mixing and softening the mixture with a curing agent entering a pile hole from a grout outlet (4) through a grout conveying pipeline, and lifting the stirring rod (1) after the drilling tool is constructed to the designed depth; and re-stirring the mixture if necessary until the construction is finished.
The invention aims to solve the problem that a cement soil mixing pile cannot be overlapped with a rigid support pile, and is provided with an expanding component (2), wherein the expanding component (2) is arranged above a hole guiding component (3), the expanding component (2) comprises an expanding blade (22) and a transmission device (21), after the hole guiding component (3) enters a pile hole, the expanding component (2) can more easily enter the pile hole, and after the expanding component (2) enters the pile hole, the pile hole can be expanded. And the cement soil mixing pile after expanding and the rigid support pile can be lapped.
The expanding blades (22) comprise two groups which are respectively connected to two ends of the transmission device (21), each group of expanding blades (22) comprises two blades which are symmetrical up and down and move synchronously, the two groups of expanding blades (22) can move synchronously in opposite directions through the transmission device (21), when one group of expanding blades (22) rotates under the action of external force, the other group of expanding blades (22) simultaneously rotate in opposite directions, the two groups of expanding blades (22) rotate in a coordinated manner, one moves and the other stops; when one group of expanding blades (22) rotates to be collinear with the transmission device (21), the other group of expanding blades (22) has a certain angle with the transmission device (21), the outer edge of each expanding blade (22) is larger than the outer edge of each stirring blade (31) during rotation, and the outer edge of each transmission device (21) is slightly smaller than the outer edge of each stirring blade (31).
Fig. 2-4 show the concrete structure of the first embodiment of the drilling tool for cement-soil mixing piles between rigid piles according to the present invention, as shown in the drawing, the transmission device (21) is fixedly connected with the mixing rod (1) through a cross beam (215), the cross beam (215) is two, and a gear shaft, which is a gear shaft (211), a gear shaft (213) and a gear shaft (214), is movably connected between the two cross beams (215), wherein the gear shaft (211) is connected with the gear shaft (213) through a transmission chain (212), and the gear shaft (213) is in gear connection with the gear shaft (214). The transmission chains (212) are positioned at two sides of the stirring rod (1), the slurry conveying pipeline penetrates through the middle of the transmission chains (212), and the gear shaft (211) and the gear shaft (214) are respectively connected with the two groups of expanding blades (22). The diameter expanding blades (22) and the gear shafts (211, 214) rotate synchronously, when one group of diameter expanding blades (22) rotates under stress, the diameter expanding blades (22) drive the gear shafts to rotate synchronously, the gear shafts are driven by the transmission chain (212) and the gears, and the other group of diameter expanding blades (22) rotate synchronously in opposite directions, namely, the two groups of diameter expanding blades (22) can realize synchronous opposite movement through the transmission device (21).
When the cement soil mixing pile drilling tool with the structure is constructed, firstly, the cement soil mixing pile is positioned, the outer edge of the rigid support pile is positioned within the range of the rotation radius of the diameter-expanding blade (22) and outside the range of the rotation radius of the mixing blade (31), the stirring rod (1) drives the drilling tool to rotate and move downwards, the hole guiding component (3) and the diameter-expanding component (2) enter a pile hole in sequence, and after the diameter-expanding component (2) enters the pile hole, because the outer edge of the rigid support pile is positioned within the range of the rotation radius of the diameter-expanding blade (22), the diameter-expanding blade (22) is blocked by the pile body of the rigid support pile and retracts inwards, namely rotates towards the direction opposite to that of the stirring rod (1); meanwhile, the group of expanding blades (22) drives the other group of expanding blades (22) linked with the group of expanding blades to open outwards, namely to rotate towards the same direction as the stirring rod (1); because the two groups of blades are positioned in the soil body, the outward-opened expanding blades (22) can be subjected to resistance opposite to the direction of the stirring rod (1) provided by undisturbed soil in the rotating process; the resistance is fed back to the expanding blades (22) blocked by the rigid support piles through the transmission device (21), so that the expanding blades (22) have a reaction force of opening towards the pile body of the rigid pile; because the pile body of the rigid support pile has higher strength than an original soil body, the final expanding blade (22) can be further contracted under the blocking of the rigid support pile until the expanding blade (22) completely passes through the blocking range of the rigid support pile; however, due to the reaction force provided by the undisturbed soil, the expanding blades (22) are always tightly attached to the outer surface of the rigid support pile when passing through the rigid support pile, so that the undisturbed soil body on the outer side of the pile body of the rigid support pile is uniformly stirred with the curing agent; when the diameter expanding blade (22) with the other side in an open state rotates to the position of the rigid support pile, the diameter expanding blade (22) with the other side in linkage with the rigid support pile is driven to be opened outwards by inward contraction under the blocking of the rigid pile; and the operation is circulated until the construction is finished. Therefore, as the undisturbed soil body outside the pile body of the rigid support pile is uniformly stirred with the curing agent, the cement soil stirring pile and the rigid support pile are in lap joint, the lap joint condition of the stirring pile and the rigid support pile is shown in fig. 9, and the problem that the stirring pile and the rigid support pile cannot be in lap joint is solved.
Fig. 5 and 6 show a concrete structure of a second embodiment of the rigid pile-to-pile soil cement mixing pile drilling tool of the present invention, which is different from the first embodiment in that a transmission device (21) having a different structure is used, and the other structures are the same as the first embodiment, and thus, a description thereof will not be repeated. In this way, the transmission device (21) comprises gear shafts (211, 214) and a transmission chain (212), the gear shafts (211, 214) are movably connected between two cross beams (215) like the first embodiment, two groups of expanding blades (22) are respectively connected with the gear shafts (211) and the gear shafts (214), the two gear shafts (211) and the gear shafts (214) are connected through the transmission chain (212), the transmission chain (212) is in an 8 shape, so that the expanding blades (22) can synchronously move towards each other through the transmission device (21) of the embodiment, the stirring rod (1) is provided with a through hole in the middle, the transmission chain (212) penetrates through the through hole, so that the curing agent is transmitted downwards from two sides of the through hole, and the second embodiment is lack of one gear shaft compared with the first embodiment, and only two gear shafts (211, 214) are used, 214) The transmission is completed, and the structure is simpler.
Fig. 7 and 8 show a concrete structure of a third embodiment of the drilling tool for cement-soil mixing piles between rigid piles according to the present invention, in this embodiment, the transmission device (21) is a circular ring structure, the circular ring structure is fixedly connected with the cross beam (215), similarly, the gear shafts (211, 214) are movably connected between the two cross beams (215), 4 gear shafts (216 and 219) are movably connected in the circular ring structure, the gear shafts are connected through the transmission chain (212), two groups of expanding blades (22) can also synchronously move towards each other through the transmission device (21) of this embodiment, the mixing rod (1) passes through the circular ring structure, the transmission device (21) is a circular ring structure and has more transmission components, and the structure is more stable.
In order to realize the synchronous opposite movement of the expanding blades (22) of the transmission device (21), the skilled person will know that various changes or equivalent substitutions can be made to the features and embodiments to realize the synchronous opposite movement of the expanding blades (22) without departing from the spirit and scope of the invention. In addition, the expanding components (2) can be one or more and are arranged on the stirring rod (1) at a certain interval. In the above embodiment of the invention, preferably, two diameter-expanding assemblies (2) are provided, and the cross beams (215) of the two diameter-expanding assemblies (2) are perpendicular to each other, and a plurality of groups of diameter-expanding assemblies are provided, so that undisturbed soil on the surface of the rigid support pile can be mixed with cement soil more quickly and better.
The use method of the drilling tool for the cement soil mixing pile among the rigid piles mainly comprises three steps of positioning and paying off, driving the drilling tool to rotate to smash undisturbed soil, mixing and softening the undisturbed soil and a curing agent, lifting the mixing rod (1) after the drilling tool is constructed to a designed depth, and carrying out repeated mixing if necessary.
When positioning and paying off, the outer edge of the rigid support pile should be positioned within the range of the radius of rotation of the diameter-expanding blade (22) and outside the range of the radius of rotation of the stirring blade (31), and the distance between the outer edge of the stirring blade (31) and the outer edge of the rigid foundation pit pile is preferably 100 mm.
In the drilling and stirring process of the drilling tool, the drilling tool is driven to rotate, a slurry conveying pump is started at the same time, a curing agent is conveyed through a slurry conveying pipe in a stirring rod (1), stirring teeth (32) and stirring blades (31) are led into holes in advance, undisturbed soil is smashed and mixed and softened with the curing agent, and the expanding assembly (2) is easier to convey into the holes; after the diameter expanding component (2) enters the pile hole, because the outer edge of the rigid support pile is positioned within the range of the turning radius of the diameter expanding blades (22), the diameter expanding blades (22) are blocked by the pile body of the rigid support pile and retract inwards, namely rotate towards the direction opposite to the stirring rod (1); meanwhile, the group of expanding blades (22) drives the other group of expanding blades (22) linked with the group of expanding blades to open outwards, namely to rotate towards the same direction as the stirring rod (1); because the two groups of expanding blades (22) are positioned in the soil body, the expanding blades (22) which are opened outwards can be subjected to resistance which is provided by undisturbed soil and is opposite to the direction of the stirring rod (1) in the rotating process; the resistance is fed back to the expanding blades (22) blocked by the rigid support piles through the transmission device (21), so that the expanding blades (22) have a reaction force of opening towards the pile body of the rigid pile; because the pile body of the rigid support pile has higher strength than an original soil body, the final expanding blade (22) can be further contracted under the blocking of the rigid support pile until the expanding blade (22) completely passes through the blocking range of the rigid support pile; however, due to the reaction force provided by the undisturbed soil, the expanding blades (22) are always tightly attached to the outer surface of the rigid support pile when passing through the rigid support pile, so that the undisturbed soil body on the outer side of the pile body of the rigid support pile is uniformly stirred with the curing agent; when the diameter expanding blade (22) with the other side in an open state rotates to the position of the rigid support pile, the diameter expanding blade (22) with the other side in linkage with the rigid support pile is driven to be opened outwards by inward contraction under the blocking of the rigid pile; and the operation is circulated until the construction is finished. Therefore, as the undisturbed soil body outside the rigid support pile body is uniformly stirred with the curing agent, the cement soil stirring pile and the rigid support pile are in lap joint.
After the drilling tool is constructed to the designed depth, the stirring rod (1) is lifted upwards, repeated stirring can be carried out if necessary, so that the undisturbed soil and the curing agent are mixed more uniformly, and the overlapping condition of the cement soil stirring pile and the rigid support pile after construction is shown in fig. 9. The stirring pile and the rigid support pile form an effective lap joint, and the problem that the pile cannot be lapped is solved.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (11)
1. The utility model provides a cement mixing pile drilling tool between rigidity stake, including puddler (1), puddler inside is equipped with defeated thick liquid pipeline for carry the curing agent, puddler (1) lower extreme is equipped with out thick liquid mouth (4), the curing agent gets into the stake downthehole through going out thick liquid mouth (4), it draws hole subassembly (3) to be equipped with above going out thick liquid mouth (4), draw hole subassembly (3) including stirring vane (31) and stirring tooth (32) of setting in stirring vane (31) lower part, stirring vane (31) fixed connection is in the puddler (1) outside, its characterized in that: the hole guide assembly (3) is provided with an expanding assembly (2), the expanding assembly (2) can expand the diameter of the pile hole after entering the pile hole, and the cement soil mixing pile after expanding can be lapped with the rigid support pile.
2. The drilling tool for the cement-soil mixing pile between the rigid piles according to claim 1, wherein: the diameter expanding assembly (2) comprises diameter expanding blades (22) and a transmission device (21), the transmission device (21) is fixedly connected with the stirring rod (1), and the diameter expanding blades (22) can synchronously move in opposite directions through the transmission device (21).
3. A rigid pile-to-pile cement mixing pile drilling tool according to claim 2, wherein; the transmission device (21) comprises transmission shafts (211, 213, 214, 216 and 219), a transmission chain (212) and cross beams (215), wherein the transmission shafts (211) and (214) are respectively and movably connected between the two cross beams (215), two groups of expanding blades (22) are respectively connected with the transmission shafts (211 and 214), and the expanding blades (22) and the transmission shafts (211 and 214) synchronously rotate.
4. A rigid pile-to-pile cement mixing pile drilling tool according to claim 3, characterized in that in the transmission device (21), the transmission shaft (213) is connected between the two cross beams (215), the transmission shaft (211) and the transmission shaft (213) are connected through the transmission chain (212), and the transmission shaft (213) and the transmission shaft (214) are connected through the gear.
5. The drilling tool for cement-soil mixing piles among rigid piles according to claim 3, wherein the transmission device (21) is characterized in that the transmission shaft (211) and the transmission shaft (214) are connected through a transmission chain (212), and the transmission chain (212) is 8-shaped.
6. The drilling tool for the cement-soil mixing pile between the rigid piles according to claim 3, wherein: the transmission device (21) is in a circular structure, the transmission shafts (216 and 219) are movably connected in the circular structure, the transmission shafts (211, 214 and 216 and 219) are connected through the transmission chain (212), and the transmission shafts (211) and (214) realize synchronous opposite movement through transmission between the transmission chain (212) and the transmission shafts (216 and 219).
7. A rigid pile-to-pile cement mixing pile drilling tool as claimed in any one of claims 1 to 5, wherein: the diameter expanding assemblies (2) are arranged in two groups up and down on the stirring rod (1) at a certain interval, and the cross beams (215) of the two groups of diameter expanding assemblies (2) are perpendicular to each other.
8. A use method of a drilling tool for a cement-soil mixing pile among rigid piles comprises the following steps: and positioning and paying off, then driving the drilling tool to rotate to smash the undisturbed soil and mix and soften the undisturbed soil with the curing agent, and finally lifting the stirring rod (1) after the drilling tool is constructed to the designed depth, wherein the outer edge of the foundation pit support pile is positioned outside the range of the radius of gyration of the stirring blade (31) within the range of the radius of gyration of the expanding blade (22) during positioning and paying off.
9. The use method of the drilling tool for the cement-soil mixing pile between the rigid piles according to claim 7, wherein the drilling tool comprises: when the positioning and paying-off are carried out, the distance between the outer edge of the stirring blade (31) and the outer edge of the rigid foundation pit pile is 100 mm.
10. The use method of the drilling tool for the cement-soil mixing pile between the rigid piles according to claim 7, wherein the drilling tool comprises: the stirring teeth (32) and the stirring blades (31) are led into the holes in advance to smash the undisturbed soil and mix and soften the undisturbed soil with the curing agent, so that the diameter-expanding component (2) can be more easily fed into the holes; after the expanding component (2) enters the pile hole, the undisturbed soil body on the outer side of the pile body of the rigid support pile and the curing agent are uniformly stirred.
11. The use method of the rigid pile-to-pile cement soil mixing pile drilling tool according to any one of claims 7 to 9, wherein: after the drilling tool is constructed to the designed depth and the stirring rod (1) is lifted, repeated stirring can be carried out, so that the undisturbed soil and the curing agent are mixed more uniformly.
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