CN103277037A - Pipe pile leading-hole construction method under boulder cluster geological condition - Google Patents
Pipe pile leading-hole construction method under boulder cluster geological condition Download PDFInfo
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- CN103277037A CN103277037A CN2013102729261A CN201310272926A CN103277037A CN 103277037 A CN103277037 A CN 103277037A CN 2013102729261 A CN2013102729261 A CN 2013102729261A CN 201310272926 A CN201310272926 A CN 201310272926A CN 103277037 A CN103277037 A CN 103277037A
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Abstract
The invention relates to a pipe pile construction method, in particular to a pipe pile leading-hole construction method under the boulder cluster geological condition. The pipe pile leading-hole construction method adopts a down-hole hammer drilling process, and dilled muck is forcibly discharged out through a spiral drill rod in a rotation mode and is completely removed by utilizing strong wind. The down-hole hammer drilling hole bottom is cleaned through air pressure for 2-3minutes and sediments are removed with lifting of the spiral drill rod after the depth of a drill hole reaches to the designed depth, and operation is stopped after detection shows that the hole depth and the sediment thickness are smaller than or equal to 50mm and meet the design requirements. When the sediment thickness is larger than 50mm, a down-hole hammer is put into the hole again to perform secondary hole cleaning till the actual requirement is met. The pipe pile leading-hole construction method under the boulder cluster geological condition is short in construction period, the construction cost can be saved by more than 10% under the same operating conditions, a stratum application range is wide, and the pipe pile leading-hole construction method is especially suitable for construction of landslide, instability and other complicated stratums. The pipe pile leading-hole construction method is strong in machine tool selectivity and low in field requirement and is especially suitable for mountains and other narrow and small fields.
Description
Technical field
The present invention relates to pipe pile construction method, specifically is that pile tube draws hole construction method under a kind of boulder group geological conditions.
Background technology
At present, pile tube draws hole construction rotary drilling rig commonly used, jump bit, clean-out machine, a complete set of pipe full circle swinging rig, these equipment exist to some extent all that work efficiency is low, drilling tool quick abrasion, drilling rod easy fracture, mud contamination is serious, construction quality does not have guarantee, construction system complexity shortcoming, especially the casting ability of conventional borehole machinery relies on the throughput of air compressor machine fully, strengthen the casting ability, just must dispose bigger air compressor machine, cause construction cost to increase.Can't penetrate rock for boulder group geological conditions tradition construction static pressure prefabricated tubular pile, can't adopt traditional blasting method, also can't adopt the manually digging hole mode.
Summary of the invention
The present invention is intended to solve pile tube under the boulder group geological conditions and draws the problems referred to above that the hole exists, and provide that a kind of speed of fulfiling hole is fast, pile tube draws hole construction method under the boulder group geological conditions that reliable construction quality, environment protecting are good.
The technical scheme that the present invention solves described problem employing is:
Pile tube draws hole construction method under a kind of boulder group geological conditions, it is characterized in that, it adopts down-the-hole hammer drill to advance technology, after the down-the-hole hammer drill machine is in place, adjusts the pile frame verticality, makes drilling tool, unit head and position, hole sight alignment, guarantees that the perforate verticality is accurate; Down-the-hole hammer drill advances in the process, drill bit is carried out to impact to hole bed rock stone continuously and is cut a hole, rock forms volumetric fracture under the effect of drill bit impact merit, the fragmented rock powder agglomates is blown off at the bottom of the hole by the air with certain pressure and speed and goes up the helical blade rotation and delivery port reaches into the rock function by the down-the-hole hammer; Boring reaches after the design hole depth at the bottom of the down-the-hole hammer hole to promote with screw rod by the clear hole 2-3 of air pressure minute gets rid of sediment, stops after hole depth and sediment thickness≤50mm meet design requirement after testing; When detecting sediment thickness〉during 50mm, the down-the-hole hammer is descended to carry out asking the second time hole in the hand-hole again, up to satisfying actual requirement.
Adopt the present invention of technique scheme, compare with conventional method and have following advantage and good effect:
Short construction period under identical operating condition, can be saved construction cost more than 10%; The stratum is applied widely, can provide powerful and boring ability that tool is flexible; Can effectively prevent the bury drills phenomenon of generation when ovum (broken) stone layer is constructed; Be particularly suitable for the construction of bad grounds such as landslide, instability; Machine-tool selective strong, to the place require lowly, be particularly suitable for the medium narrow and small place of massif.
Description of drawings
Fig. 1 is process chart of the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples, and purpose only is to understand better content of the present invention.Therefore, the cited case does not limit protection scope of the present invention.
Referring to Fig. 1, pile tube draws hole construction method under the described boulder group of the present embodiment geological conditions, is undertaken by following step:
⑴ measurement and positioning:
The measurement of coordinates control point that arranges in the place according to the owner is benchmark, utilize rangefinder, pass through coordinate transformation, corner, range finding, fixed point, emit one by one every group of stake Center stake and with arbitrary of the Center stake coaxial line stake position, other of every group of stake position is then according to working drawing, the Center stake that utilization has been emitted reaches the reference stake with the Center stake coaxial line, emit one by one with invar tape, every group of stake position hammers in the soil layer with timber, and with the red and blue pencil sign of crossing.
⑵ down-the-hole hammer is in place:
The down-the-hole hammer drill machine must check preparing the construction area place in advance before displacement, watch degree of compaction, the planeness in place.Down-the-hole pile machine equipment assembly, accessory weight is big, body is long, needs an excavator coordinative construction during assembling.Rig must have the special messenger to command in shifting process; The good steel plate of place mat; Rig is answered " decide the people and decide machine ".The down-the-hole hammer drill machine is in place, adjusts the pile frame verticality, and the necessary sight alignment in drilling tool, unit head and position, hole guarantees that the perforate verticality is accurate.Rig must send the special messenger that the verticality of rig is observed in executing the brill process, when abnormal conditions occurring, must stop construction immediately.
⑶ down-the-hole hammer drill advances:
Advance in the process at down-the-hole hammer drill, the piston in the high pressure air drives down-the-hole hammer cylinder body that is provided by air compressor machine is done high frequency and is moved back and forth.And the kinetic energy that produces that will move is delivered on the drill bit continuously, makes drill bit obtain certain ballistic work.Drill bit is carried out to impact to hole bed rock stone continuously and is cut a hole under the effect of ballistic work.Rock forms volumetric fracture under the effect of this drill bit impact merit.The fragmented rock powder agglomates is blown off at the bottom of the hole by the air with certain pressure and speed and goes up the helical blade rotation and delivery port reaches into the rock function by the down-the-hole hammer.In the process that cutter advances, down-the-hole hammer equipment carries control verticality function, can guarantee the verticality of pore-forming.
In order to prevent hole deviation, if find that the anti-quantity of slag is few or percussion drilling efficient is low or hole wall when unstable, repeatedly short distance is carried drilling tool in the percussion drilling, falls piece so that bury drills stick of tool accident takes place with anti-collapse.Percussion drilling is namely punched the rock stratum of rockfilling after designing hole depth, drilling tool may be vertically down speed change quickening suddenly, should consider to stop percussion drilling this moment, and drilling tool is back and forth carried drilling tool to drilling tool proposition aperture can be smooth and easy the time up and down.For preventing water inlet in the down-the-hole hammer, don't stop air feed when carrying drilling tool up and down.In percussion drilling, run into ovum gravel, erratic boulder, during backfill stone stratum not of uniform size, after ovum gravel or backfill stone are subjected to the impact drilling tool extruding, the displacement of rolling probably, even extruding, steering drilling tool drill bit, as easy as rolling off a logly cause the boring off normal, thereby cause a pipe to be difficult to squeeze into or run-off the straight even broken pile.In this section stratum, in the percussive drilling construction, to take the conservative practice of " slow two low three gently presses " during perforate.Keeping carrying up and down indirectly drilling tool, its objective is to preventing and cave in piece with the drilling rod locking, is to remove in the hole wall unsettled " probe stone " in case stick of tool on the other hand.Pore-forming points for attention: meet boulder, stop boring (maintenance air feed), and the light pressure of short distance is hung up and beaten, original position is back and forth carried drilling tool up and down; This process is no less than three times.
⑷ clear hole:
Boring reaches after the design hole depth at the bottom of the down-the-hole hammer hole to promote with screw rod by the clear hole 2-3 of air pressure minute gets rid of sediment, stops after hole depth and sediment thickness≤50mm meet design requirement after testing.Be provided with slagging channel in rig down-the-hole tup end, the slag that cuts can utilize pressure wind to be discharged on the long screw drill rod by slagging channel for medium, long screw drill rod is promoted, the slag that gets out just can directly drain into outside the hole, finish the clear hole of boring, after the cleaning by the high-voltage high-speed pressure wind, cleaned out at the bottom of the hole, do not had sediment.When detecting sediment thickness〉during 50mm, the down-the-hole hammer should be descended to carry out asking the second time hole in the hand-hole again, up to satisfying actual requirement.
⑸ pore-forming, verify:
According to the form below requires to verify, and hole depth is whole hole after check meets the requirements.
Claims (1)
1. pile tube draws hole construction method under the boulder group geological conditions, it is characterized in that, its adopts down-the-hole hammer drill to advance technology, after the down-the-hole hammer drill machine is in place, adjusts the pile frame verticality, makes drilling tool, unit head and position, hole sight alignment, guarantees that the perforate verticality is accurate; Down-the-hole hammer drill advances in the process, drill bit is carried out to impact to hole bed rock stone continuously and is cut a hole, rock forms volumetric fracture under the effect of drill bit impact merit, the fragmented rock powder agglomates is blown off at the bottom of the hole by the air with certain pressure and speed and goes up the helical blade rotation and delivery port reaches into the rock function by the down-the-hole hammer; Boring reaches after the design hole depth at the bottom of the down-the-hole hammer hole to promote with screw rod by the clear hole 2-3 of air pressure minute gets rid of sediment, stops after hole depth and sediment thickness≤50mm meet design requirement after testing; When detecting sediment thickness〉during 50mm, the down-the-hole hammer is descended to carry out asking the second time hole in the hand-hole again, up to satisfying actual requirement.
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| CN201310272926.1A CN103277037B (en) | 2013-07-02 | 2013-07-02 | Pipe pile leading-hole construction method under boulder cluster geological condition |
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| CN103277037B CN103277037B (en) | 2016-04-27 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275381A (en) * | 2014-05-28 | 2016-01-27 | 宏润建设集团股份有限公司 | Drilling construction method for water-rich cobble stratum by utilizing impact drill |
| CN105862708A (en) * | 2016-04-26 | 2016-08-17 | 北京振冲工程机械有限公司 | Down-the-hole hammer and guide hole matched construction method for vibro-replacement stone column composite foundation |
| CN106759267A (en) * | 2017-01-22 | 2017-05-31 | 广州市市政集团有限公司 | A kind of auxiliary for being easy to hard formation steel sheet pile to squeeze into draws hole method |
| CN110273417A (en) * | 2019-07-07 | 2019-09-24 | 韩少鹏 | A kind of architectural engineering cast-in-place pile construction method |
| CN110952916A (en) * | 2019-11-28 | 2020-04-03 | 武汉金瑞威基础工程有限公司 | Construction method for crushing and dismantling deep part of old building pile foundation |
| CN114352198A (en) * | 2022-02-08 | 2022-04-15 | 江西理工大学 | Matching type drill rod positioning auxiliary device for blasting and drilling |
| CN114704202A (en) * | 2022-03-23 | 2022-07-05 | 保利长大工程有限公司 | Construction method of bare rock geological pile foundation |
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| CN1121131A (en) * | 1994-10-20 | 1996-04-24 | 宋丁晚 | Inverse construction process for precisely erecting underground reinforced concrete column and equipment thereof |
| CN101148876A (en) * | 2007-11-05 | 2008-03-26 | 山东省机械施工有限公司 | Large load composite pile and construction method thereof |
| CN103132908A (en) * | 2013-02-07 | 2013-06-05 | 宁波市中乾建筑工程有限公司 | Device for drilling rock and embedding rock-socketed prestressed pipe pile by down-hole hammer and construction method of device |
| CN103161164A (en) * | 2013-03-27 | 2013-06-19 | 孔超 | Rock-socketed pre-stressed pipe pile for slip casting after spinning drilling rock is planted in pile bottom |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1121131A (en) * | 1994-10-20 | 1996-04-24 | 宋丁晚 | Inverse construction process for precisely erecting underground reinforced concrete column and equipment thereof |
| CN101148876A (en) * | 2007-11-05 | 2008-03-26 | 山东省机械施工有限公司 | Large load composite pile and construction method thereof |
| CN103132908A (en) * | 2013-02-07 | 2013-06-05 | 宁波市中乾建筑工程有限公司 | Device for drilling rock and embedding rock-socketed prestressed pipe pile by down-hole hammer and construction method of device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275381A (en) * | 2014-05-28 | 2016-01-27 | 宏润建设集团股份有限公司 | Drilling construction method for water-rich cobble stratum by utilizing impact drill |
| CN105862708A (en) * | 2016-04-26 | 2016-08-17 | 北京振冲工程机械有限公司 | Down-the-hole hammer and guide hole matched construction method for vibro-replacement stone column composite foundation |
| CN106759267A (en) * | 2017-01-22 | 2017-05-31 | 广州市市政集团有限公司 | A kind of auxiliary for being easy to hard formation steel sheet pile to squeeze into draws hole method |
| CN106759267B (en) * | 2017-01-22 | 2019-01-22 | 广州市市政集团有限公司 | A kind of auxiliary pilot hole method squeezed into convenient for hard formation steel sheet pile |
| CN110273417A (en) * | 2019-07-07 | 2019-09-24 | 韩少鹏 | A kind of architectural engineering cast-in-place pile construction method |
| CN110952916A (en) * | 2019-11-28 | 2020-04-03 | 武汉金瑞威基础工程有限公司 | Construction method for crushing and dismantling deep part of old building pile foundation |
| CN114352198A (en) * | 2022-02-08 | 2022-04-15 | 江西理工大学 | Matching type drill rod positioning auxiliary device for blasting and drilling |
| CN114352198B (en) * | 2022-02-08 | 2023-08-08 | 江西理工大学 | Matching type drill rod positioning auxiliary device for blasting and drilling |
| CN114704202A (en) * | 2022-03-23 | 2022-07-05 | 保利长大工程有限公司 | Construction method of bare rock geological pile foundation |
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| Publication number | Publication date |
|---|---|
| CN103277037B (en) | 2016-04-27 |
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Effective date of registration: 20220909 Granted publication date: 20160427 |