CN111577118A - Mechanical rapid hole forming construction method for slide-resistant pile - Google Patents
Mechanical rapid hole forming construction method for slide-resistant pile Download PDFInfo
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- CN111577118A CN111577118A CN202010403140.9A CN202010403140A CN111577118A CN 111577118 A CN111577118 A CN 111577118A CN 202010403140 A CN202010403140 A CN 202010403140A CN 111577118 A CN111577118 A CN 111577118A
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- hole
- rock
- outer sleeve
- drill bit
- drilling
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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
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
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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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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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
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
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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
- E21B7/04—Directional drilling
Abstract
The invention discloses a mechanical rapid hole forming construction method for an anti-slide pile, which comprises the following steps: leveling a field and marking pile positions; secondly, forming holes in the upper covering layer by adopting dry operation of a rotary drilling rig; thirdly, forming a hole in the lower rock stratum by adopting a down-the-hole hammer reverse circulation pipe following drilling technology; step four, adopting compressed air to blow the hole strongly; and step five, pulling the outer sleeve by using a hydraulic drawbench, and recycling the outer sleeve. Has the advantages that: according to the mechanical rapid hole forming construction method for the slide-resistant pile, provided by the invention, the hole is formed in the upper covering layer by adopting dry operation of the rotary drilling rig, the stratum collapse is prevented by using the barrel type drill bit, the lower rock stratum adopts the reverse circulation down-the-hole hammer and pipe drilling technology, the drilling efficiency is ensured, and the wall is protected by using the sleeve, so that the stability of the hole wall is high.
Description
Technical Field
The invention relates to a hole forming construction method, in particular to a rapid hole forming construction method for an anti-slide pile machine.
Background
At present, in common geological disasters, the damage caused by landslide is relatively large, and effective prevention and rapid treatment of landslide are important contents of the current geological disaster treatment project. The treatment mode of the landslide body mostly adopts a protection scheme, and the common protection scheme is to construct anti-slide piles. The anti-slide pile has the characteristics of simple structure, reliable power transmission, quick anti-slide effect and the like, can resist the sliding force of a landslide body, plays a role in stabilizing a side slope, and has important significance for treating the landslide.
At present, the anti-slide pile construction usually adopts manual excavation operation, the method has the advantages of simple operation process, convenient construction and easy guarantee of construction quality, but the underground operation condition of manual hole excavation is poor, the labor intensity is high, the single-pile construction speed is low, the personal safety hidden danger is very severe, and a plurality of unsafe factors and hidden dangers exist. When the blasting method is adopted to carry out the stone operation, the blasting shock wave can cause mountain disturbance, and the instability and the construction risk of landslide can be aggravated. The mechanical pore-forming slide-resistant pile has the characteristics of high construction efficiency, few operators, low risk, low weather influence and the like. Patent CN110374091A discloses a mechanical hole forming construction method for rectangular slide-resistant piles, which mainly adopts a rotary drilling rig to drill down to form rectangular holes in multiple times, and only needs to adopt conventional mechanical equipment without increasing the construction cost. Patent CN110593753A discloses a mechanical hole forming construction method for rectangular slide-resistant piles, provides a novel technology for constructing slide-resistant piles by combining a grooving machine and a long-arm breaking hammer, and has the advantages of strong adaptability, safety, fast construction and the like. Patent CN109680695A discloses a construction process for pouring and piling a long spiral drill hole in an anhydrous thick sand gravel stratum, wherein a high-power large-torque long spiral drilling machine is utilized, and the hole forming speed is 5-10 times of that of a positive and negative circulation impact drilling machine.
The mechanical construction method mainly adopts equipment such as a long spiral drilling rig, a rotary drilling rig, a hydraulic grab bucket, a percussion drilling rig and the like, but the methods are mainly used for covering layers and strongly weathered rock formations. When drilling in slightly weathered and bedrock stratum or deep hole, the drilling efficiency is low, and the construction requirement of fast landslide control cannot be met.
Disclosure of Invention
The invention aims to solve the problems that in the existing mechanical hole forming method, when drilling in slightly weathered bedrock stratum or deep hole, the drilling efficiency is low, and the construction requirement for fast landslide control cannot be met, and provides a mechanical fast hole forming construction method for an anti-slide pile.
The invention provides a mechanical rapid hole forming construction method for an anti-slide pile, which comprises the following steps:
the method comprises the following steps that firstly, road and hydropower supply of a construction site and arrangement of construction equipment are completed according to pile group design data and a pile position plane diagram, surface sundries are removed by an excavator, the site is leveled, pay-off positioning is carried out by a total station or a GPS (global positioning system) positioning instrument, and the pile position is marked;
step two, the upper covering layer is subjected to dry operation hole forming by a rotary drilling rig, a slurry protection wall is not needed, a drum type drill bit with a movable valve at the bottom is driven by a power head to rotate to crush the rock-soil layer, the crushed rock-soil body directly enters the drum type drill bit, then the drill bit is lifted out of a hole by a telescopic drill rod to unload soil, and the operations of rotating, cutting, lifting and slag throwing are continuously repeated until a strongly weathered or moderately weathered rock layer is reached;
the overburden refers to loose piles, sediments of various causes, such as clay layers, sandy soil layers, crushed stone soil bodies and the like, which are covered on bedrock;
thirdly, forming a hole in a lower rock stratum by adopting a down-the-hole hammer reverse circulation follow-up drilling technology, driving a reverse circulation down-the-hole hammer to work by utilizing compressed air, generating high-frequency impact work to act on a drill bit, realizing efficient rock crushing drilling, returning cut rock debris to the ground surface along a central channel of a dual-channel drill rod in a reverse circulation mode, collecting the rock debris after dust removal treatment, transmitting vibration force to an outer sleeve through the reverse circulation drill bit to enable the rock debris to go down in the drilling process, finally realizing wall protection while drilling, additionally connecting the drill rod and an outer sleeve at the same time until the drill rod is drilled to the designed hole depth, and repeatedly lifting the drilling tool to clean the rock debris at the bottom of the hole before replacing the drill rod each time;
the rock formation refers to weathered rock formations below the overburden and intact rock below the weathered layer;
step four, adopting compressed air to blow the hole strongly, forming reverse circulation slag discharge by utilizing negative pressure generated inside the drill bit, cleaning the bottom of the hole, hoisting the pre-processed reinforcement cage into the hole by utilizing a crane, slowly descending to the designed elevation of the reinforcement cage, and pouring concrete to form the anti-slide pile;
and step five, pulling the outer sleeve by using a hydraulic drawbench, and recycling the outer sleeve.
The down-the-hole hammer, the drill bit and the double-channel drill rod used in the down-the-hole hammer reverse circulation pipe following drilling technology are all hollow structures, and can provide a channel for reverse circulation transportation of rock debris. In the drilling process, part of the impact force generated by the down-the-hole hammer is transmitted to the drill bit to break the rock; the other part is transmitted to the outer sleeve through the drill bit through the pipe shoe, so that the hole wall is protected by the outer sleeve in the drilling process, broken rock debris can enter the central channel of the drilling tool through the drill bit and return to the ground surface, the outer sleeve adopts flat threads, the length of the outer sleeve is equal to that of the drill rod, and the lower part of the outer sleeve is connected with the pipe shoe.
The invention has the beneficial effects that:
according to the mechanical rapid hole forming construction method for the slide-resistant pile, provided by the invention, the hole is formed in the upper covering layer by adopting dry operation of the rotary drilling rig, the stratum collapse is prevented by using the barrel type drill bit, the lower rock stratum adopts the reverse circulation down-the-hole hammer and pipe drilling technology, the drilling efficiency is ensured, and the wall is protected by using the sleeve, so that the stability of the hole wall is high.
Drawings
FIG. 1 is a schematic view of the construction method of the present invention.
FIG. 2 is a schematic diagram of dry-working hole forming of an upper covering layer by a rotary drilling rig in the method.
FIG. 3 is a schematic diagram of a down-the-hole hammer reverse circulation pipe drilling technique for hole formation in a lower rock layer in the method of the present invention.
The labels in the above figures are as follows:
1. rotary drilling rig 2, power head 3, telescopic drill rod 4, barrel type drill bit 5 and slag discharge pipe
6. Air inlet 7, double-channel faucet 8, double-channel drill rod 9 and reverse circulation down-the-hole hammer
10. Outer casing 11, shoe 12, reverse circulation drill bit.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to the drawings.
The landslide control engineering is taken as an example for explanation, the side slope retaining structure adopts an anti-slide pile group, and the anti-slide pile is a drilled reinforced concrete cast-in-place pile. The construction process, as shown in fig. 1, generally comprises the following steps:
step one, completing the road and water power supply of a construction site and the arrangement of construction equipment according to the design data of pile groups and a pile position plane diagram. And (5) removing sundries on the ground surface by using an excavator, and leveling the field. And (4) carrying out paying-off positioning by using a total station or a GPS positioning instrument, and marking the pile position. Assembling construction equipment, and paving a workbench by using sleepers to prevent the mechanical equipment from inclining in the construction process, wherein the shovel head is vertical to the central line of the pile hole, and correcting.
And step two, referring to fig. 2, the upper covering layer is subjected to dry operation hole forming by a rotary drilling rig, and mud wall protection is not needed. After the rotary drilling rig 1 is in place, a cylindrical drill bit 4 with a movable valve at the bottom is driven by a power head 2 to gyrate and crush a rock-soil layer, and the gyration footage is controlled to be about 0.6m each time. During the dry operation hole forming process, the drill bit is properly watered along the drill rod in time so as to cool and lubricate the drill bit. The broken rock-soil body directly enters the cylinder type drill bit 4, and then the cylinder type drill bit 4 is lifted out of the hole by the telescopic drill rod 3 for unloading. The drilling speed is strictly controlled, a mode of few drilling service lifting is adopted, the occurrence of hole collapse and buried drilling accidents caused by too fast footage is avoided, and the operations of rotating, cutting, lifting and slag throwing are continuously repeated until a strongly weathered or moderately weathered rock stratum is reached;
and step three, referring to fig. 3, forming a hole in the lower rock stratum by adopting a down-the-hole hammer reverse circulation pipe drilling technology.
Compressed air enters an air inlet 6 of a double-channel water faucet 7 and descends along an annular gap of a double-channel drill rod 8 to drive a reverse circulation down-the-hole hammer 9 to do work, generated high-frequency impact work acts on a reverse circulation drill bit 12, part of impact force is used for crushing rocks, and the other part of impact force is transmitted to an outer sleeve 10 through the reverse circulation drill bit 12 through a pipe shoe 11, so that the outer sleeve 10 is used for protecting a hole wall in the drilling process, and the purpose of drilling while protecting the wall is achieved. The cut rock debris returns to the ground surface through the slag discharge pipe 5 along the central channel of the double-channel drill rod 8 in a reverse circulation mode, and is collected after dust removal treatment. The outer sleeve 10 is a flat thread, the length of the outer sleeve is equal to that of the drill rod, and the outer sleeve 10 is connected with the drill rod at the same time until the outer sleeve is drilled to the designed hole depth. Before replacing the drill rod each time, the drilling tool needs to be lifted repeatedly to clean the rock debris at the bottom of the hole;
and step four, adopting compressed air to blow the hole strongly, forming reverse circulation deslagging by utilizing negative pressure generated inside the reverse circulation drill bit 12, and timely transporting away rock debris formed in the drilling process. And after emptying, hoisting the pre-processed reinforcement cage into the hole by using a crane after the pore-forming inspection is qualified. The reinforcement cage is hoisted by adopting methods of sectional manufacturing, sectional transportation and sectional connection, so that deformation is prevented. And after the reinforcement cage is installed in place, pouring concrete to form a pile, wherein the pouring elevation exceeds the designed elevation of the pile top by 0.5-1.0 m.
And step five, pulling the outer sleeve by using a hydraulic drawbench, and recycling the outer sleeve.
As a new construction technology, the mechanical rapid hole forming construction method for the slide-resistant pile has the advantages of strong adaptability, rapid construction, high efficiency, environmental protection and the like, has good pile forming effect, improves the construction benefit, reduces the safety risk and can obviously shorten the construction period.
Claims (2)
1. A mechanical rapid hole forming construction method for an anti-slide pile is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps that firstly, road and hydropower supply of a construction site and arrangement of construction equipment are completed according to pile group design data and a pile position plane diagram, surface sundries are removed by an excavator, the site is leveled, pay-off positioning is carried out by a total station or a GPS (global positioning system) positioning instrument, and the pile position is marked;
step two, the upper covering layer is subjected to dry operation hole forming by a rotary drilling rig, a slurry protection wall is not needed, a drum type drill bit with a movable valve at the bottom is driven by a power head to rotate to crush the rock-soil layer, the crushed rock-soil body directly enters the drum type drill bit, then the drill bit is lifted out of a hole by a telescopic drill rod to unload soil, and the operations of rotating, cutting, lifting and slag throwing are continuously repeated until a strongly weathered or moderately weathered rock layer is reached;
the upper overburden refers to loose packing, sediment of various origin overlying bedrock;
thirdly, forming a hole in a lower rock stratum by adopting a down-the-hole hammer reverse circulation follow-up drilling technology, driving a reverse circulation down-the-hole hammer to work by utilizing compressed air, generating high-frequency impact work to act on a drill bit, realizing efficient rock crushing drilling, returning cut rock debris to the ground surface along a central channel of a dual-channel drill rod in a reverse circulation mode, collecting the rock debris after dust removal treatment, transmitting vibration force to an outer sleeve through the reverse circulation drill bit to enable the rock debris to go down in the drilling process, finally realizing wall protection while drilling, additionally connecting the drill rod and an outer sleeve at the same time until the drill rod is drilled to the designed hole depth, and repeatedly lifting the drilling tool to clean the rock debris at the bottom of the hole before replacing the drill rod each time;
the rock formation refers to weathered rock formations below the overburden and intact rock below the weathered layer;
step four, adopting compressed air to blow the hole strongly, forming reverse circulation slag discharge by utilizing negative pressure generated inside the drill bit, cleaning the bottom of the hole, hoisting the pre-processed reinforcement cage into the hole by utilizing a crane, slowly descending to the designed elevation of the reinforcement cage, and pouring concrete to form the anti-slide pile;
and step five, pulling the outer sleeve by using a hydraulic drawbench, and recycling the outer sleeve.
2. The mechanical rapid hole forming construction method for the slide-resistant pile according to claim 1, characterized in that: the down-the-hole hammer, the drill bit and the double-channel drill rod which are used in the down-the-hole hammer reverse circulation pipe following drilling technology are all hollow structures, and can provide a channel for reverse circulation transportation of rock debris, and in the drilling process, part of impact force generated by the down-the-hole hammer is transmitted to the drill bit to be used for crushing rock; the other part is transmitted to the outer sleeve through the drill bit through the pipe shoe, so that the hole wall is protected by the outer sleeve in the drilling process, broken rock debris can enter the central channel of the drilling tool through the drill bit and return to the ground surface, the outer sleeve adopts flat threads, the length of the outer sleeve is equal to that of the drill rod, and the lower part of the outer sleeve is connected with the pipe shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010403140.9A CN111577118B (en) | 2020-05-13 | 2020-05-13 | Mechanical rapid hole forming construction method for slide-resistant pile |
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| CN202010403140.9A CN111577118B (en) | 2020-05-13 | 2020-05-13 | Mechanical rapid hole forming construction method for slide-resistant pile |
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| CN111577118A true CN111577118A (en) | 2020-08-25 |
| CN111577118B CN111577118B (en) | 2021-07-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115710903A (en) * | 2022-11-22 | 2023-02-24 | 广东精特建设工程有限公司 | Construction method for improving steel pipe pile into rock by using existing engineering structure |
| CN116044484A (en) * | 2022-08-25 | 2023-05-02 | 华亭煤业集团有限责任公司 | Fire prevention grouting conveying device for coal mine goaf |
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| KR20030029073A (en) * | 2003-02-21 | 2003-04-11 | (주)현이앤씨 | Method and apparatus of large size stiffness passive pile with dewatering and soil reinforcement |
| JP2013133626A (en) * | 2011-12-26 | 2013-07-08 | Akira Kobayashi | Auger head for soil cement mixing |
| CN203334951U (en) * | 2013-07-01 | 2013-12-11 | 中南大学 | Down hole hammer |
| CN104196014A (en) * | 2014-09-11 | 2014-12-10 | 中南大学 | Combined rock-embedded anchor cable slide-resistant pile where round steel is implanted and construction method thereof |
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| CN110593753A (en) * | 2019-08-30 | 2019-12-20 | 中铁七局集团第二工程有限公司 | Mechanical rapid hole forming construction method for rectangular slide-resistant pile |
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2020
- 2020-05-13 CN CN202010403140.9A patent/CN111577118B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030029073A (en) * | 2003-02-21 | 2003-04-11 | (주)현이앤씨 | Method and apparatus of large size stiffness passive pile with dewatering and soil reinforcement |
| JP2013133626A (en) * | 2011-12-26 | 2013-07-08 | Akira Kobayashi | Auger head for soil cement mixing |
| CN203334951U (en) * | 2013-07-01 | 2013-12-11 | 中南大学 | Down hole hammer |
| CN104196014A (en) * | 2014-09-11 | 2014-12-10 | 中南大学 | Combined rock-embedded anchor cable slide-resistant pile where round steel is implanted and construction method thereof |
| CN109630015A (en) * | 2018-11-26 | 2019-04-16 | 中铁二十局集团第二工程有限公司 | A kind of friction pile mechanical hole building method |
| CN110593753A (en) * | 2019-08-30 | 2019-12-20 | 中铁七局集团第二工程有限公司 | Mechanical rapid hole forming construction method for rectangular slide-resistant pile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116044484A (en) * | 2022-08-25 | 2023-05-02 | 华亭煤业集团有限责任公司 | Fire prevention grouting conveying device for coal mine goaf |
| CN116044484B (en) * | 2022-08-25 | 2023-08-11 | 华亭煤业集团有限责任公司 | Fire prevention grouting conveying device for coal mine goaf |
| CN115710903A (en) * | 2022-11-22 | 2023-02-24 | 广东精特建设工程有限公司 | Construction method for improving steel pipe pile into rock by using existing engineering structure |
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| CN111577118B (en) | 2021-07-23 |
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Effective date of registration: 20220629 Address after: 210000 No. 200, Zhongshan North Road, Gulou District, Nanjing City, Jiangsu Province Patentee after: Nanjing Gongda Geotechnical Engineering Co.,Ltd. Address before: 130012 No. 2699 Qianjin Street, Jilin, Changchun Patentee before: Jilin University |