CN113374425B - Filling pile punching device free of hole cleaning - Google Patents
Filling pile punching device free of hole cleaning Download PDFInfo
- Publication number
- CN113374425B CN113374425B CN202110754226.0A CN202110754226A CN113374425B CN 113374425 B CN113374425 B CN 113374425B CN 202110754226 A CN202110754226 A CN 202110754226A CN 113374425 B CN113374425 B CN 113374425B
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- pile
- drill bit
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- pile rod
- rod
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- 238000004080 punching Methods 0.000 title claims abstract description 26
- 238000004140 cleaning Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 99
- 238000005507 spraying Methods 0.000 claims abstract description 33
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000002689 soil Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 9
- 238000005406 washing Methods 0.000 description 9
- 239000011435 rock Substances 0.000 description 8
- 230000009969 flowable effect Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005527 soil sampling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention provides a pile filling and punching device free of hole cleaning, and belongs to the technical field of civil engineering. The pile comprises a pile rod and a drill bit, wherein a water inlet channel penetrating through the upper end and the lower end of the pile rod is arranged in the pile rod, a pressurized cavity is arranged in the drill bit, and the lower end of the pile rod is connected with the upper end of the drill bit through a spline; the key grooves of the splines on the pile rod and the drill bit form an inclined angle of 3-10 degrees with the axis of the pile rod, so that the drill bit can form a water spraying channel communicated between the pressurized cavity and the outside after moving downwards relative to the pile rod, and a water spraying port communicated with the water spraying channel is arranged between the pile rod and the drill bit. The invention has the advantages of cleaning the hole wall when punching.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and relates to a pile filling and punching device free of hole cleaning.
Background
The basic steps of the construction of the filling pile are as follows: punching, hole cleaning, steel reinforcement cage discharging and concrete pouring, wherein the purpose of hole cleaning is to clean free-flowing soil and sand reserved at the hole wall and the hole bottom, and the interlayer of the sand is avoided in a member formed after the concrete pouring, so that the strength of the pile body is influenced. The existing common practice is as follows: after the punching is completed, clear water is repeatedly flushed into the hole, the bottom and the wall of the hole are cleaned, so that flowable sediment is mixed into the water to form sewage, then the sewage is pumped out, and repeated stir-frying is performed for a plurality of times to clean the pile hole until the wall and the bottom of the hole are left with harder rock soil.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a pile filling and punching device without cleaning holes.
The aim of the invention can be achieved by the following technical scheme: the pile filling and punching device without cleaning is characterized by comprising a pile rod and a drill bit, wherein a water inlet channel penetrating through the upper end and the lower end of the pile rod is arranged in the pile rod, a pressed cavity is arranged in the drill bit, and the lower end of the pile rod is connected with the upper end of the drill bit through a spline; the key grooves of the splines on the pile rod and the drill bit form an inclined angle of 3-10 degrees with the axis of the pile rod, so that the drill bit can form a water spraying channel communicated between the pressurized cavity and the outside after moving downwards relative to the pile rod, and a water spraying port communicated with the water spraying channel is arranged between the pile rod and the drill bit.
Further, the water outlet direction of the water spray port forms an inclination angle of between 80 and 100 degrees with the axis of the pile rod.
Further, a tensioning spring positioned in the compression cavity is connected between the lower end of the pile rod and the drill bit.
Further, the outer wall of the pile rod is provided with a soil-retreating spiral sheet.
Further, the drill bit is provided with a plurality of tool bits.
Further, the upper end of the water inlet channel is connected with a hose, the hose is connected with a booster water pump, and the water pressure in the water inlet channel can be regulated by the booster water pump.
Further, the tool bit is located outside the compression chamber.
The main aim of this scheme is through the mode of punching the in-process promptly carrying out high pressure washing pore wall, replaces traditional hole washing step that carries out after punching, and this mode has following advantage:
the pile hole drilled by the drill bit is taken as a foundation pile hole, the foundation pile hole is completed under the condition of applying downward pressure by the drill bit and the drill rod in a spiral manner, and the hole wall is continuously washed by high pressure water in the descending process of the pile rod, so that the easily flowable soil and sand on the hole wall are stripped, and stone and hard soil which cannot be stripped are reserved, so that the wall of the pile hole is free of soft soil, after concrete is poured, the concrete can enter the hole wall concave part after being washed by water, the concrete entering the hole wall concave part and the hard rock soil which is not stripped by water are together to form a hard protection hole outer layer on the periphery of the foundation pile hole, the soil layer structure can be automatically adapted, the easily flowable soil which is unfavorable for the strength of a pile body is removed, and the strength, especially the shearing strength of the pile body is greatly improved.
The hole wall concave part which is formed by water washing and is positioned at the periphery of the foundation pile hole forms an expanding structure of the foundation pile hole, under the condition of controlling water spraying pressure, the pile hole with the diameter gradually increased from top to bottom can be formed, and then the filling pile structure with the diameter gradually increased from top to bottom is formed, so that the strength of a pile body is greatly enhanced, and under the same shear strength, the length of the filling pile manufactured by the method can be properly shortened, the efficiency is improved, and the construction period is shortened.
Because the complicated hole cleaning step is eliminated, the construction period is shortened, and the method can also utilize the piling device to pump water, thereby reducing the variety of the pile filling construction equipment and improving the overall benefit.
The control gets into the water pressure in the water inlet channel, can make the drill bit move down relative pile pole after receiving great water pressure, and water pressure impact drill bit not only can supply water in good time, can initiatively adjust water pressure according to the soil body condition moreover, and concrete as follows: when the hardness of soil body below the drill bit is large so that the drill bit is blocked in the descending direction, the stretching distance between the compression cavity and the middle of the pile rod is small when the compression cavity is subjected to the same water pressure, the flow section of the water spraying channel is small, the water spraying pressure is large at the moment, the water flow is small, when the drill bit is blocked in the descending direction, the hole wall rock is hard, the water pressure is required to be larger to possibly peel off stones or gravel easy to circulate, otherwise, when the drill bit is smooth in the descending direction, the pressure between the drill bit and the pile rod is small, the flow section of the water spraying channel is large, the water spraying pressure is small, and the water spraying quantity is large because the hole wall rock of the area is relatively soft, and if the water pressure is too large, the hole wall is excessively expanded.
Meanwhile, the water pressure applied to the drill bit can also increase the descending pressure and impact frequency of the drill bit, and the drill bit can be effectively buffered and cooled through the pressure cavity.
Drawings
Fig. 1 is a schematic structural diagram of the pile grouting punching device when water is not sprayed.
Fig. 2 is a schematic structural diagram of the pile grouting punching device in a water spraying state.
Fig. 3 is an enlarged view of a portion a in fig. 1.
Fig. 4 is an enlarged view of a portion B in fig. 2.
Fig. 5 is a schematic structural view of a pile hole formed by the pile filling and punching device.
In the figure, 1, a pile rod; 2. a drill bit; 3. a water inlet channel; 4. a pressurized cavity; 5. a water spray channel; 6. a water jet; 7. tensioning the spring; 8. soil-removing spiral sheets; 9. a cutter head.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
The pile filling method comprises the following steps: A. punching, wherein in the feeding process of the pile rod 1, water washing is synchronously carried out on the wall of the pile hole, so that the sediment easy to flow on the wall of the hole is stripped; the pressure of the flushing water generally follows the following rule: the closer to the bottom of the pile hole, the higher the flushing pressure; B. pumping water, and pumping out the mud-water mixture remained in the pile hole after the punching is completed; C. a lower reinforcement cage; D. and (5) pouring concrete, and completing the construction of the cast-in-place pile after the concrete is solidified.
The construction method can be used for punching through a pile filling punching device without clearing holes, as shown in fig. 1, 2, 3 and 4, the pile filling punching device comprises a pile rod 1 and a drill bit 2, a water inlet channel 3 penetrating through the upper end and the lower end of the pile rod 1 is arranged in the pile rod 1, a pressure cavity 4 is arranged in the drill bit 2, and the lower end of the pile rod 1 is connected with the upper end of the drill bit 2 through a spline; the key grooves of the splines on the pile rod 1 and the drill bit 2 form an inclined angle of 3-10 degrees with the axis of the pile rod 1, so that a water spraying channel 5 communicated with the pressurized cavity 4 and the outside can be formed after the drill bit 2 moves downwards relative to the pile rod 1, and a water spraying port 6 communicated with the water spraying channel 5 is arranged between the pile rod 1 and the drill bit 2.
The water outlet direction of the water jet 6 forms an inclination angle between 80 degrees and 100 degrees with the axis of the pile rod 1.
A tensioning spring 7 positioned in the compression cavity 4 is connected between the lower end of the pile rod 1 and the drill bit 2.
The outer wall of the pile rod 1 is provided with a soil-retreating spiral sheet 8.
The drill bit 2 is provided with a plurality of cutter heads 9.
The upper end of the water inlet channel 3 is connected with a hose, the hose is connected with a booster pump, and the water pressure in the water inlet channel 3 can be regulated by the booster pump.
As refinement of the step A, after the pile rod 1 reaches a specified depth, the pile rod 1 is pulled out on the premise of maintaining water spraying, the wall of the pile hole is subjected to secondary cleaning, then the pile rod 1 is sunk to the bottom of the pile hole again, water spraying can be continuously kept in the pile rod 1 sinking process, and the secondary water spraying and water spraying pressure during pile rod sinking should be smaller than that during punching.
As refinement of the step B, after the drill bit 2 is sunk to the bottom of the pile hole, the downward pressure on the pile rod 1 is released, the pile rod 1 is rotated at a high speed, water spraying is stopped, and the mud-water mixture in the pile hole is discharged by the soil-removing screw sheet 8.
If mud water is thinner, water in the pile hole needs to be discharged in a mode of sleeving the pile rod outside the protective pipe, namely, the pile rod escapes from the protective pipe, the upper end of the protective pipe is fixed on the ground, and the mud water mixture is pumped out through the rotation of the pile rod.
When the drilling is performed, the water spraying time can be determined according to the actual situation, the water spraying is not needed just after the drilling is started, the water spraying pressure and the rock and soil sampling are set after the research, and the method cannot be directly used for the drilling of soft soil and the drilling penetrating through an underground water layer.
The cutter head 9 is located outside the pressure chamber 4. Ensuring that all the cutter heads 9 are well water-cooled.
The main aim of this scheme is through the mode of punching the in-process promptly carrying out high pressure washing pore wall, replaces traditional hole washing step that carries out after punching, and this mode has following advantage:
the pile hole drilled by the drill bit 2 is taken as a foundation pile hole, the foundation pile hole is completed under the condition of applying downward pressure by the drill bit 2 and the drill rod in a spiral manner, and the pile rod 1 continuously washes the hole wall under high pressure in the descending process, so that the easily flowable soil and sand on the hole wall are stripped, and stone and hard soil which cannot be stripped are reserved, so that the pile hole wall does not have soft soil, as shown in fig. 5, after concrete is poured, the concrete can enter the hole wall recess after washing, the concrete entering the hole wall recess and the hard rock soil which is not stripped by washing are together to form a hard protection hole outer layer on the periphery of the foundation pile hole, the soil layer structure can be automatically adapted, the easily flowable soil which is unfavorable for the strength of the pile body is removed, and the strength, especially the shearing strength of the pile body is greatly improved.
The hole wall concave part which is formed by water washing and is positioned at the periphery of the foundation pile hole forms an expanding structure of the foundation pile hole, under the condition of controlling water spraying pressure, the pile hole with the diameter gradually increased from top to bottom can be formed, and then the filling pile structure with the diameter gradually increased from top to bottom is formed, so that the strength of a pile body is greatly enhanced, and under the same shear strength, the length of the filling pile manufactured by the method can be properly shortened, the efficiency is improved, and the construction period is shortened.
Because the complicated hole cleaning step is eliminated, the construction period is shortened, and the method can also utilize the piling device to pump water, thereby reducing the variety of the pile filling construction equipment and improving the overall benefit.
The control gets into the water pressure in the water inlet channel 3, can make drill bit 2 move down relative pile pole 1 after receiving great water pressure, and water pressure impact drill bit 2 not only can supply water in good time, can initiatively adjust water pressure according to the soil body condition moreover, and specifically as follows: when the hardness of the soil body below the drill bit 2 is large so that the drill bit 2 is blocked in the descending direction, the stretching distance between the compression cavity 4 and the middle of the pile rod 1 is small when the compression cavity is subjected to the same water pressure, the flow section of the water spraying channel 5 is small, the water spraying pressure is large at the moment, the water flow is small, when the drill bit 2 is blocked in the descending direction, the rock and soil on the hole wall are hard, the stone or gravel easy to circulate can be stripped only by the aid of the larger water pressure, otherwise, when the drill bit 2 is smooth in the descending direction, the pressure between the drill bit 2 and the pile rod 1 is small, the flow section of the water spraying channel 5 is large under the water pressure, the water spraying pressure is small, and the water spraying quantity is large, because the rock and soil on the hole wall in the area are relatively soft, and the hole wall is excessively expanded if the water pressure is too large.
Meanwhile, the water pressure applied to the drill bit 2 can also increase the descending pressure and impact frequency of the drill bit 2, and the drill bit 2 can be effectively buffered and cooled through the pressure receiving cavity 4.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The pile filling and punching device free of hole cleaning is characterized by comprising a pile rod (1) and a drill bit (2), wherein a water inlet channel (3) penetrating through the upper end and the lower end of the pile rod (1) is arranged in the pile rod (1), a pressure cavity (4) is arranged in the drill bit (2), and the lower end of the pile rod (1) is connected with the upper end of the drill bit (2) through a spline; the key grooves of the splines on the pile rod (1) and the drill bit (2) form an inclined angle of 3-10 degrees with the axis of the pile rod (1), so that a water spraying channel (5) communicated with the pressurized cavity (4) and the outside can be formed after the drill bit (2) moves downwards relative to the pile rod (1), and a water spraying port (6) communicated with the water spraying channel (5) is formed between the pile rod (1) and the drill bit (2);
a tensioning spring (7) positioned in the compression cavity (4) is connected between the lower end of the pile rod (1) and the drill bit (2);
the upper end of the water inlet channel (3) is connected with a hose, the hose is connected with a booster water pump, and the water pressure in the water inlet channel (3) is regulated by the booster water pump.
2. A clear-hole free pile filling and punching device according to claim 1, characterized in that the water outlet direction of the water jet (6) forms an inclination angle of between 80 and 100 degrees with the axis of the pile rod (1).
3. A clear-hole free pile filling and punching device according to claim 2, characterized in that the outer wall of the pile rod (1) is provided with a soil-withdrawal screw (8).
4. A clear-hole free filling pile punching device according to claim 2, characterized in that the drill bit (2) is externally provided with a plurality of cutter heads (9).
5. A clear hole free filling pile perforating device as claimed in claim 4, characterized in that the cutter head (9) is located outside the pressurized cavity (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110754226.0A CN113374425B (en) | 2021-07-05 | 2021-07-05 | Filling pile punching device free of hole cleaning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110754226.0A CN113374425B (en) | 2021-07-05 | 2021-07-05 | Filling pile punching device free of hole cleaning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113374425A CN113374425A (en) | 2021-09-10 |
| CN113374425B true CN113374425B (en) | 2023-05-16 |
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| CN202110754226.0A Active CN113374425B (en) | 2021-07-05 | 2021-07-05 | Filling pile punching device free of hole cleaning |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294819A (en) * | 2014-11-04 | 2015-01-21 | 昆明学院 | Construction method of cast-in-place pile |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603414B (en) * | 2009-07-24 | 2012-11-14 | 吉林省岩科新技术研究开发有限责任公司 | Method for reinforcing wall of drill hole by jet grouting |
| CN102383734A (en) * | 2010-08-31 | 2012-03-21 | 辽宁省水利水电科学研究院 | Injection-type hole flushing drilling tool |
| CN204200084U (en) * | 2014-09-27 | 2015-03-11 | 中国石油化工集团公司 | A kind of casing inner diameter of hydro powered is to boring high pressure rotary bistrique |
| JP6958816B2 (en) * | 2018-03-29 | 2021-11-02 | ＶＥＥｍａ株式会社 | Injection nozzle of well cleaning equipment |
| CN109915043A (en) * | 2019-03-19 | 2019-06-21 | 安徽联开建设工程有限责任公司 | A kind of construction method of spiral Squeezing Soil Pile hole drill tool and bored concrete pile |
| CN210216402U (en) * | 2019-07-04 | 2020-03-31 | 山东倍特力地基工程技术有限公司 | Drilling machine for extruding, spraying, reaming and pressure-grouting concrete pile |
| CN110512599B (en) * | 2019-09-17 | 2024-02-20 | 沈阳工业大学 | Powder spraying spiral soil-squeezing pile-forming drilling tool device and foundation pile construction method thereof |
| CN111946259B (en) * | 2020-08-14 | 2021-07-23 | 江苏省岩土工程勘察设计研究院 | Method for forming hole of cast-in-situ bored pile |
| CN112502647B (en) * | 2020-11-12 | 2022-02-25 | 中国石油大学(北京) | Bore positioning cleaning assembly, unconventional reservoir bore positioning jetting tool and method |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294819A (en) * | 2014-11-04 | 2015-01-21 | 昆明学院 | Construction method of cast-in-place pile |
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