CN112576195A - Hard cutting secant pile construction drill bit with guiding function and construction process thereof - Google Patents
Hard cutting secant pile construction drill bit with guiding function and construction process thereof Download PDFInfo
- Publication number
- CN112576195A CN112576195A CN201910928714.1A CN201910928714A CN112576195A CN 112576195 A CN112576195 A CN 112576195A CN 201910928714 A CN201910928714 A CN 201910928714A CN 112576195 A CN112576195 A CN 112576195A
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- Prior art keywords
- drill
- cutting
- barrel
- construction
- rod
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000036346 tooth eruption Effects 0.000 claims abstract description 8
- 238000005553 drilling Methods 0.000 claims description 27
- 239000002689 soil Substances 0.000 claims description 10
- 230000003247 decreasing effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/16—Roller bits characterised by tooth form or arrangement
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—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
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of secant pile construction, in particular to a hard cutting secant pile construction drill bit with a guiding function and a construction process thereof, and the hard cutting secant pile construction drill bit comprises a guide rod, a reaming barrel drill and a drill rod; the guide rod consists of a cutting pick cylinder drill and a guide pipe section, and the upper end of the cutting pick cylinder drill is fixed with a plurality of guide pipe sections; the reaming barrel drill consists of an inner trident with cutting teeth and a gear barrel drill; the guide pipe section at the top is fixed at the lower end of the drill rod, the periphery of the drill rod is fixedly drilled by the cone barrel by utilizing the inner trident connection with the cutting teeth, and the lower edge of the inner trident of the cutting teeth is arranged in the cone barrel drill. The problem of the hard cutting straightness that hangs down of secant pile is difficult to guarantee is solved.
Description
Technical Field
The invention relates to the technical field of secant pile construction, in particular to a hard cutting secant pile construction drill bit with a guiding function and a construction process thereof.
Background
Under the severe situation of serious shortage of underground water resources at present, the water stopping construction adopted during the subway construction period becomes the necessary requirement of engineering construction under the new situation. The secant pile is used as an effective side wall water stop structure, is influenced by narrow construction operation space in the application of underground excavation stations, and a drilling machine cannot timely transit to place, so that the traditional soft cutting secant pile process that the I-sequence pile is filled by adopting an ultra-retarding material cannot be realized. Therefore, the process of hard cutting the secant pile can only be adopted, namely, after plain concrete poured by the reinforcement-free piles in the first sequence at two sides is solidified, drilling and pore-forming operation of the reinforcement-free piles in the second sequence in the middle is carried out. When the middle reinforced pile is drilled, the pile body material strength of the two non-reinforced piles is high, undisturbed soil exists between the piles, the strength is low, the problem of serious uneven hardness of the stratum exists, the drill bit of the reinforced pile in the second order swings back and forth, and the drilling verticality is difficult to guarantee. The occlusion integrity of the occlusion pile water stopping structure is greatly influenced, and the water stopping effect is influenced, so that the risk of leakage and gushing water is increased. Therefore, how to reasonably and effectively solve the problem of verticality control in the process of hard cutting II-order steel bar pile hole forming operation of the secant pile becomes the key of success or failure of the water stopping structure.
Disclosure of Invention
The invention aims to provide a hard cutting secant pile construction drill bit with a guiding function and a construction process thereof, aiming at the defects and shortcomings of the prior art, and solving the problem that the hard cutting verticality of a secant pile is difficult to guarantee.
In order to achieve the purpose, the invention adopts the following technical scheme: the construction drill bit comprises a guide rod, a hole expanding barrel drill and a drill rod; the guide rod consists of a cutting pick cylinder drill and a guide pipe section, and the upper end of the cutting pick cylinder drill is fixed with a plurality of guide pipe sections; the reaming barrel drill consists of an inner trident with cutting teeth and a gear barrel drill; the guide pipe section at the top is fixed at the lower end of the drill rod, the periphery of the drill rod is fixedly drilled by the cone barrel by utilizing the inner trident connection with the cutting teeth, and the lower edge of the inner trident of the cutting teeth is arranged in the cone barrel drill.
The construction process of the construction drill bit comprises the following operation steps:
firstly, a drilling machine is in place, drilling holes in the first-order piles without the reinforcement piles, and pouring concrete;
secondly, the drilling machine switches construction drill bits, and the number of the guide pipe sections is increased or decreased according to geological conditions to achieve the proper length of the guide rod;
positioning by a drilling machine, drilling undisturbed soil between the non-reinforced piles by a guide rod, and controlling the verticality easily, wherein the drilling size is small and the guide function is achieved;
and fourthly, immediately, the reaming barrel drill starts to drill, at the moment, the guide rod is completely drilled into the stratum to form an embedded section, and the reaming barrel drill is restrained from drilling and deflecting under the stratum condition that the rebar pile and the original soil are uneven in hardness.
Furthermore, the guide rod is formed by combining a cutting tooth cylinder drill and a guide pipe section, and original soil among the non-reinforced piles is drilled and dug during the hole forming of the reinforced piles of the occlusive piles.
Furthermore, the reaming barrel drill is formed by combining the cone barrel drill and the inner trident of the cutting tooth, the contact area of the cutting tooth of the cone barrel drill and the non-reinforced pile is small, the strength is high, the non-reinforced pile is easy to cut, the cutting body is crushed by the inner trident of the cutting tooth, and the drilling efficiency is improved.
By adopting the structure, the invention has the beneficial effects that: the invention provides a hard cutting secant pile construction drill bit with a guiding function and a construction process thereof.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a flow chart of the construction process of the present invention.
Description of reference numerals:
the cutting pick comprises a cutting pick barrel drill 1, a guide pipe joint 2, a gear wheel barrel drill 3, a cutting pick inner trigeminal 4 and a drill rod 5.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, the following technical solutions are adopted in the present embodiment: the construction drill bit in the embodiment comprises a guide rod, a reaming barrel drill and a drill rod 5; the guide rod is composed of a cutting bit barrel drill 1 and guide pipe sections 2, and the upper end of the cutting bit barrel drill 1 is fixedly provided with a plurality of guide pipe sections 2; the reaming barrel drill consists of an inner trident 4 with cutting teeth and a gear barrel drill 3; the guide pipe section 2 at the top is fixed at the lower end of a drill rod 5, the periphery of the drill rod 5 is connected and fixed with a gear barrel drill 3 through a cutting pick inner trident 4, and the lower edge of the cutting pick inner trident 4 is arranged inside the gear barrel drill 3.
The construction process of the construction drill bit in the specific embodiment comprises the following operation steps:
firstly, a drilling machine is in place, drilling holes in the first-order piles without the reinforcement piles, and pouring concrete;
secondly, the drilling machine switches construction drill bits, and the number of the guide pipe sections is increased or decreased according to geological conditions to achieve the proper length of the guide rod;
positioning by a drilling machine, drilling undisturbed soil between the non-reinforced piles by a guide rod, and controlling the verticality easily, wherein the drilling size is small and the guide function is achieved;
and fourthly, immediately, the reaming barrel drill starts to drill, at the moment, the guide rod is completely drilled into the stratum to form an embedded section, and the reaming barrel drill is restrained from drilling and deflecting under the stratum condition that the rebar pile and the original soil are uneven in hardness.
Furthermore, the guide rod is formed by combining a cutting tooth cylinder drill and a guide pipe section, and original soil among the non-reinforced piles is drilled and dug during the hole forming of the reinforced piles of the occlusive piles.
Furthermore, the reaming barrel drill is formed by combining the cone barrel drill and the inner trident of the cutting tooth, the contact area of the cutting tooth of the cone barrel drill and the non-reinforced pile is small, the strength is high, the non-reinforced pile is easy to cut, the cutting body is crushed by the inner trident of the cutting tooth, and the drilling efficiency is improved.
By adopting the structure, the beneficial effects of the embodiment are as follows:
1. at present, a drill bit and a process for effectively ensuring the control of the hard cutting perpendicularity of an occlusive pile are unavailable, under construction and built projects, the perpendicularity deviation of the hard cutting occlusive pile is serious, and even the situation that a non-rib pile and a rib pile are not occluded occurs at the bottom of a foundation pit, so that a waterproof curtain cannot be formed; according to the pilot bit, the drilling direction is advanced, and the deflection of the reaming barrel drill is restrained at the same time, so that the pilot bit is formed, and the verticality control of the hard cutting secant pile is effectively guaranteed;
2. the invention is suitable for all hard cutting secant pile construction and has wide application range.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (4)
1. Hard cutting secant pile construction drill bit with direction function, its characterized in that: the device comprises a guide rod, a reaming barrel drill and a drill rod (5); the guide rod is composed of a cutting bit barrel drill (1) and guide pipe sections (2), and the upper end of the cutting bit barrel drill (1) is fixedly provided with a plurality of guide pipe sections (2); the reaming barrel drill consists of an inner trident (4) with cutting teeth and a cone barrel drill (3); the guide pipe joint (2) at the top is fixed at the lower end of a drill rod (5), the periphery of the drill rod (5) is fixedly connected with a toothed wheel cylinder drill (3) by utilizing a cutting tooth inner trigeminal (4), and the lower edge of the cutting tooth inner trigeminal (4) is arranged in the toothed wheel cylinder drill (3).
2. The process of constructing a hard cut bite pile construction drill with a pilot function as set forth in claim 1, wherein: the operation steps are as follows:
firstly, a drilling machine is put in place, drilling holes in the first-order unreinforced piles, and pouring concrete;
secondly, the drilling machine switches construction drill bits, and the number of the guide pipe sections is increased or decreased according to geological conditions to achieve the proper length of the guide rod;
positioning by a drilling machine, drilling undisturbed soil between the non-reinforced piles by a guide rod, and controlling the verticality easily, wherein the drilling size is small and the guide function is achieved;
and fourthly, immediately, the reaming barrel drill starts to drill, at the moment, the guide rod is completely drilled into the stratum to form an embedded section, and the reaming barrel drill is restrained from drilling and deflecting under the stratum condition that the rebar pile and the original soil are uneven in hardness.
3. A hard cutting bite pile construction drill with a guiding function and a construction process thereof as claimed in claim 2, wherein: the guide rod is formed by combining a cutting tooth cylinder drill and a guide pipe section, and original soil among the non-reinforced piles is drilled and excavated during the pore-forming of the reinforced piles of the occlusive piles.
4. A hard cutting bite pile construction drill with a guiding function and a construction process thereof as claimed in claim 2, wherein: the reaming barrel drill is formed by combining a gear barrel drill and a three-fork drill with a cutting tooth, the contact area of the cutting tooth of the gear barrel drill and a non-reinforced pile is small, the strength is high, the non-reinforced pile is easy to cut, and the cutting body is crushed by the three-fork drill with the cutting tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928714.1A CN112576195A (en) | 2019-09-28 | 2019-09-28 | Hard cutting secant pile construction drill bit with guiding function and construction process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928714.1A CN112576195A (en) | 2019-09-28 | 2019-09-28 | Hard cutting secant pile construction drill bit with guiding function and construction process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112576195A true CN112576195A (en) | 2021-03-30 |
Family
ID=75110171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910928714.1A Pending CN112576195A (en) | 2019-09-28 | 2019-09-28 | Hard cutting secant pile construction drill bit with guiding function and construction process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112576195A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638706A (en) * | 2021-07-22 | 2021-11-12 | 深圳市工勘岩土集团有限公司 | Pile-forming construction equipment for large-diameter rock-socketed cast-in-place pile with super-thick covering layer |
| CN113833406A (en) * | 2021-10-25 | 2021-12-24 | 北京三一智造科技有限公司 | Drilling tool, rotary drilling rig and staged drilling construction method |
-
2019
- 2019-09-28 CN CN201910928714.1A patent/CN112576195A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638706A (en) * | 2021-07-22 | 2021-11-12 | 深圳市工勘岩土集团有限公司 | Pile-forming construction equipment for large-diameter rock-socketed cast-in-place pile with super-thick covering layer |
| CN113833406A (en) * | 2021-10-25 | 2021-12-24 | 北京三一智造科技有限公司 | Drilling tool, rotary drilling rig and staged drilling construction method |
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