CN110528497A - A kind of construction method of hidden hole drilling cooperation impact drill continuous wall trench underground - Google Patents
A kind of construction method of hidden hole drilling cooperation impact drill continuous wall trench underground Download PDFInfo
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- CN110528497A CN110528497A CN201810498268.0A CN201810498268A CN110528497A CN 110528497 A CN110528497 A CN 110528497A CN 201810498268 A CN201810498268 A CN 201810498268A CN 110528497 A CN110528497 A CN 110528497A
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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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
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Abstract
The construction method of the hidden hole drilling cooperation impact drill continuous wall trench underground of embodiment according to the present invention, pass through arrangement hole position step, hidden hole drilling construction guidance hole step, hydraulic grab bucket grooving machine grabs soil layer, it rushes stake machine and rushes rock step, the clear bottom pore formation step of filter sand carries out construction operation, by first making pilot hole with hidden hole drilling, soil layer cleaning is carried out with hydraulic grab bucket grooving machine again, on the basis of conventional construction method, create ground-connecting-wall combination grooving new process, on the one hand high-intensitive inclined-plane granitic formation ground-connecting-wall construction hammer partially is solved, bit freezing, the problems such as grooving low efficiency, the safety of ground-connecting-wall construction is ensured simultaneously, quality, progress, improve effect, cost is saved.
Description
Technical field
The present invention relates to a kind of construction methods of hidden hole drilling cooperation impact drill continuous wall trench underground.
Background technique
Diaphram wall has extensive use in China, wherein in 100Mpa with the geological conditions of ramp granite
Under, the construction method of continuous wall trench underground mainly has: one is using the processing method to inclination competent bed, including to inclining
Oblique place rockfills, and pours strong concrete etc., then with the direct grooving of impact drill, this method is at high cost and the inclined hole effect of processing is poor；
Another kind is using the method for impact drill cooperation chute forming machine construction, and this method is easy to appear hammer, bit freezing partially, long construction period, function
Imitate it is low, ground-connecting-wall grooving quality it is difficult to ensure that.
Therefore, under inclined-plane high intensity granite geological conditions, how to innovate one kind both can solve ground-connecting-wall work progress
In difficult points such as hammer, bit freezing partially, and can improve construction effect, reduce construction period construction method be those skilled in the art urgently
The technical problem solved.
Summary of the invention
The present invention is directed at least solve one of the problems of the prior art.
It is an object of the invention to propose a kind of construction method of hidden hole drilling cooperation impact drill continuous wall trench underground.
The construction method of the hidden hole drilling cooperation impact drill continuous wall trench underground of embodiment according to the present invention, the construction
Method includes:
Arrangement hole position step: marking out hole site to be drilled with by spray painting mode on leading wall, every row hole site to be drilled it
Between spacing be 500mm, pitch-row is 1.5m between the hole site to be drilled marked led on wall, equal in a phase slot section two sides
The 1m that extends outwardly carries out bore operation, in the second stage of slot section two sides away from progress bore operation at I-steel 1.25m；
Hidden hole drilling construction guidance hole step: constructor operates down-the-hole drill to appropriate location, according to centre behind first two sides
Sequence is constructed through row, by way of increasing air pressure to diamond drilling rod, creeps into rock stratum rapidly；Hydraulic grab bucket grooving machine crawl soil
Layer: for the impact force and closing force that constructor adjusts hydraulic grab to pick up each layer of strong-weathered rock or more, constructor examines prison
Examining system is rectified a deviation, the hydraulic grab bucket grooving machine will paste immediately when X-axis or Y-axis either direction deviation are more than permissible value
The wall of leading for facing foundation pit side enters slot, and should fill into fresh mud in time, to maintain to lead mud liquid level stabilizing in wall, the hydraulic grab
Chute forming machine stops at once to scar, and slot bottom is made to remain basically stable；
Rush stake machine and rush rock step: after the hydraulic grab bucket grooving machine fulfils assignment, constructor's operation rushes stake machine to rock to be rushed
Position, pile monkey are unified for 3.8t, are constantly impacted by pile monkey to scar, change rock stratum internal structure, are allowed to split
Gap accelerates slotter construction for the later period and creates favorable conditions；
The clear bottom pore formation step of filter sand: constructor should carry out filter sand to slot section, 15 steel pipe of diameter is inserted into slot, away from bottom hole
0.3-0.8m terminates rubber hose on steel pipe, and hose other end connects sand removing machine.
The construction method of the hidden hole drilling cooperation impact drill continuous wall trench underground of embodiment according to the present invention, by first using
Hidden hole drilling makees pilot hole, then carries out soil layer cleaning with hydraulic grab bucket grooving machine, on the basis of conventional construction method, creates ground
Even wall combines grooving new process, on the one hand solves high-intensitive inclined-plane granitic formation ground-connecting-wall construction hammer, bit freezing, grooving effect partially
The low problem of rate, while ensuring the safety, quality of ground-connecting-wall construction, progress, effect is improved, cost has been saved.
In the present embodiment, single groove segment grooving period was averagely foreshortened to 60 days by 130 days, and single width slot grooving cost is average
9.83 ten thousand yuan are reduced, grooving efficiency is substantially increased, reduces costs；Full bid section amounts to 45 width, reduces by 4,420,000 yuan of cost, whole
The body duration shortens about 2 months.
Preferentially, the arrangement hole position step further include: when sipes section is 0.8m, constructor is with 3 row of quincuncial arrangement
Hole site to be drilled.
Preferentially, hidden hole drilling construction guidance hole step further include: impact drill rushes rock: constructor at least uses 2
CJ80 impact drill rushes rock pore-forming, in diaphragm wall rotation angle position, outward half of hole location should be bored, to guarantee diaphragm wall integrality more.
Preferentially, the stake machine that rushes rushes rock step further include: after constructor, which at least completes 1 main aperture, rushes rock operation, increases
If sediment separator.
Preferentially, the stake machine that rushes rushes rock step further include:
Slip consistency needs are arranged according to code requirement, to guarantee that rushing broken rock grain is suspended in slot；
Mud guarantees to recycle for 24 hours in slot, to prevent from being suspended in the sinking that slot rushes broken rock grain；
Scarfing cinder is carried out using preset time period, weldering is hammered into shape, rockfill or via hole works.
Specific embodiment
Below with reference to embodiment, the present invention is further explained.In the following detailed description, it is only retouched by way of explanation
Certain exemplary embodiments of the invention are stated.Undoubtedly, those skilled in the art will recognize, without departing from
In the case where the spirit and scope of the present invention, the described embodiments may be modified in various different ways.Therefore,
Description is regarded as illustrative in nature, and is not intended to limit the scope of the claims.
The construction method of the hidden hole drilling cooperation impact drill continuous wall trench underground of embodiment according to the present invention, by first using
Hidden hole drilling makees pilot hole, then carries out soil layer cleaning with chute forming machine, finally rushes the technical solution of rock grooving with impact drill to realize,
Concrete construction method is as follows:
Arrangement hole position step: marking out hole site to be drilled with by spray painting mode on leading wall, every row hole site to be drilled it
Between spacing be 500mm, pitch-row is 1.5m between the hole site to be drilled marked led on wall, equal in a phase slot section two sides
The 1m that extends outwardly carries out bore operation, in the second stage of slot section two sides away from progress bore operation at I-steel 1.25m；
Preferentially, when sipes section is 0.8m, constructor is with 3 row of quincuncial arrangement hole site to be drilled.
Hidden hole drilling construction guidance hole step: constructor operates down-the-hole drill to appropriate location, according to centre behind first two sides
Sequence is constructed through row, by way of increasing air pressure to diamond drilling rod, creeps into rock stratum rapidly；
Preferentially, guarantee that drilling and shadoof are deflated alternately in construction, blow out inner hole deposition slag, guarantee that drilling rod smoothly bores
Into avoiding bit freezing.The verticality that drilling rod is observed in construction avoids inclined hole from causing bit freezing, or forms useless hole.Mud level control exists
Lead 0.8m under wall.The construction of hidden hole drilling increases the free face of rock stratum, accelerates fission of the later period rock stratum after being impacted by pile monkey
Rate.
Preferentially, impact drill rushes rock: constructor at least rushes rock pore-forming using 2 CJ80 impact drills, in diaphragm wall corner portion
Position outward should bore half of hole location, to guarantee diaphragm wall integrality more.
Hydraulic grab bucket grooving machine grabs soil layer: the impact force and closing force of constructor's adjusting hydraulic grab are severely-weathered to pick up
More than rock each layer, constructor examine monitoring system, when X-axis or Y-axis either direction deviation are more than permissible value ± 10cm, stand
It rectifies a deviation, the hydraulic grab bucket grooving machine, which will paste, to be faced the wall of leading of foundation pit side and enter slot, and should fill into fresh mud in time, with dimension
It holds and leads mud liquid level stabilizing in wall, the hydraulic grab bucket grooving machine to scar stops at once, and slot bottom is made to remain basically stable；
Preferentially, the impact force of hydraulic grab and closing force are enough to pick up each layer of strong-weathered rock or more, during grooving,
The verticality of strict control grab bucket and plan-position, especially fluting stage.Examine monitoring system, X, Y-axis either direction
When deviation is more than permissible value, rectify a deviation immediately.Grab bucket patch, which faces foundation pit side and leads wall, enters slot, and mechanically actuated is steady.And it mends in time
Enter fresh mud, mud liquid level stabilizing in wall is led in maintenance.It grabs bucket and stops to scar, and slot bottom is made to remain basically stable.Using 2 CJ80
Impact drill rushes rock pore-forming, leads and marks each bore position on wall, and pitch-row is 1.5 meters, outward to bore half in diaphragm wall rotation angle position more
Hole location, to guarantee diaphragm wall integrality.The slot section successively completed to hidden hole drilling construction is constructed.Chute forming machine is arranged in night and applies
Work reduces mechanical equipment on daytime jam situation.
Rush stake machine and rush rock step: after the hydraulic grab bucket grooving machine fulfils assignment, constructor's operation rushes stake machine to rock to be rushed
Position, pile monkey are 3.8t, are constantly impacted by pile monkey to scar, to change rock stratum internal structure, are allowed to split
Gap accelerates slotter construction for the later period and creates favorable conditions；
Preferentially, stroke is controlled in impact process within 1.5 meters, and pays attention to preventing from fanning the air hammering and put rope into shape excessively, is reduced
Cell wall is disturbed.Wirerope is observed in impact process, and whether there is or not abrasions, hammer into shape such as card and hard draw should be avoided, act rashly, prevent hammer.
Further, slot section punching quantity is optimized, slot section five main apertures of construction, pore-forming sequence is first two side connectors
Hole, then intermediate hole location, last constructed residual hole location.After at least completing 1 main aperture, sediment separator is added, timely desanding increases
Pile monkey reduces the filter sand time when construction of later period slotter to effective impact force of rock stratum, reduces what sand screen was plugged
Possibility.
Further, according to on-site actual situations, following 3 work steps are sequentially completed:
Slip consistency needs to require to be arranged according to code for construction and acceptance of subway engineering (GB50299-1999), to protect
Card rushes broken rock grain and is suspended in slot, recycles outlet as early as possible by mud, and reduction is secondary to rush rock, improves punching efficiency；
Mud guarantees to recycle for 24 hours in slot, prevents from being suspended in the sinking that slot rushes broken rock grain, improves punching efficiency；
Use preset time period benefit, it may be preferable that selection night shift time (23:00-06:00) carry out scarfing cinder, weldering hammer, rockfill or
Via hole work, improves punching on daytime efficiency.
The clear bottom pore formation step of filter sand: constructor should carry out filter sand to slot section, 15 steel pipe of diameter is inserted into slot, away from bottom hole
0.3-0.8m terminates rubber hose on steel pipe, and hose other end connects sand removing machine.
Preferentially, after having repaired slot section, it is necessary to carry out filter sand to slot section, sling insertion diameter 15cm steel with crawler crane in slot
Pipe and air-compressor air duct (air-compressor air duct is connect lower with steel pipe), steel pipe upper end is connect with sand filter, away from bottom hole 0.3-0.8m,
Rubber hose is terminated on steel pipe, hose other end connects sand removing machine, utilizes reacting cycle principle, the mud and sediment (stone, sand) of slot bottom
It is separated by steel pipe inspiration sand removing machine, achievees the purpose that the clear bottom of desanding, constructor one every 2m is filtered mono- conduit position
Sand.
The construction of hidden hole drilling do pilot hole on the one hand solve in punch process bore partially caused by ground-connecting-wall grooving it is of poor quality,
On the other hand the problem of period length is increased the free face of rock stratum by drilling in advance, accelerates the fission that later period pile monkey rushes rock
Rate improves and rushes rock efficiency.
Therefore rock stratum construction guidance hole and free face first are done with hidden hole drilling, then are in time removed native stone disintegrating slag with chute forming machine,
Then scar is cleaved with rushing stake machine, the ground-connecting-wall trenching construction suitable for various extremely hard inclined-plane rock stratum.
Claims (5)
1. a kind of construction method of hidden hole drilling cooperation impact drill continuous wall trench underground, which is characterized in that the construction method packet
It includes:
Arrangement hole position step: marking out hole site to be drilled with by spray painting mode on leading wall, between every row hole site to be drilled
Spacing is 500mm, and pitch-row is 1.5m between the hole site to be drilled marked led on wall, in a phase slot section two sides to extension
It stretches 1m and carries out bore operation, in the second stage of slot section two sides away from progress bore operation at I-steel 1.25m；
Hidden hole drilling construction guidance hole step: constructor operates down-the-hole drill to appropriate location, according to sequence intermediate behind first two sides
It constructs through row, by way of increasing air pressure to diamond drilling rod, creeps into rock stratum rapidly；
Hydraulic grab bucket grooving machine grab soil layer: constructor adjust hydraulic grab impact force and closing force with pick up strong-weathered rock with
Upper each layer, constructor examine monitoring system, when X-axis or Y-axis either direction deviation are more than permissible value, are entangled immediately
Partially, the hydraulic grab bucket grooving machine, which will paste, faces the wall of leading of foundation pit side and enters slot, and should fill into fresh mud in time, to maintain to lead in wall
Mud liquid level stabilizing, the hydraulic grab bucket grooving machine to scar stops at once, and slot bottom is made to remain basically stable；
Rush stake machine and rush rock step: after the hydraulic grab bucket grooving machine fulfils assignment, constructor's operation rushes stake machine to rock position to be rushed,
Pile monkey is 3.8t, is constantly impacted by pile monkey to scar, to change rock stratum internal structure, is allowed to crack occur, is
Later period accelerates slotter construction and creates favorable conditions；
The clear bottom pore formation step of filter sand: constructor should carry out filter sand to slot section, diameter 15cm steel pipe is inserted into slot, away from bottom hole 0.3-
0.8m terminates rubber hose on steel pipe, and hose other end connects sand removing machine.
2. the construction method of hidden hole drilling cooperation impact drill continuous wall trench underground according to claim 1, it is characterised in that:
The arrangement hole position step further include: when sipes section is 0.8m, constructor is with 3 row of quincuncial arrangement hole site to be drilled.
3. the construction method of hidden hole drilling cooperation impact drill continuous wall trench underground according to claim 2, it is characterised in that:
Hidden hole drilling construction guidance hole step further include: impact drill rushes rock: constructor at least using 2 CJ80 impact drills rush rock at
Hole outward should bore half of hole location, to guarantee diaphragm wall integrality in diaphragm wall rotation angle position more.
4. the construction method of hidden hole drilling cooperation impact drill continuous wall trench underground according to claim 1-3,
Be characterized in that: the stake machine that rushes rushes rock step further include: after constructor, which at least completes 1 main aperture, rushes rock operation, adds silt
Separator.
5. the construction method of hidden hole drilling cooperation impact drill continuous wall trench underground according to claim 4, it is characterised in that:
The stake machine that rushes rushes rock step further include:
Slip consistency needs are arranged according to code requirement, to guarantee that rushing broken rock grain is suspended in slot；
Mud guarantees to recycle for 24 hours in slot, to prevent from being suspended in the sinking that slot rushes broken rock grain；
Scarfing cinder is carried out using preset time period, weldering is hammered into shape, rockfill or via hole works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810498268.0A CN110528497A (en) | 2018-05-23 | 2018-05-23 | A kind of construction method of hidden hole drilling cooperation impact drill continuous wall trench underground |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810498268.0A CN110528497A (en) | 2018-05-23 | 2018-05-23 | A kind of construction method of hidden hole drilling cooperation impact drill continuous wall trench underground |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608572A (en) * | 2020-06-02 | 2020-09-01 | 甘肃五环公路工程有限公司 | Down-the-hole drill and impact drill matched pile foundation pore-forming construction method |
| CN114086571A (en) * | 2021-11-23 | 2022-02-25 | 上海远方基础工程有限公司 | Rock entering grooving construction method by matching small-diameter down-the-hole hammer with groove milling machine |
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| CN102797252A (en) * | 2012-09-13 | 2012-11-28 | 中铁十二局集团第七工程有限公司 | Construction method of underground continuous walls |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608572A (en) * | 2020-06-02 | 2020-09-01 | 甘肃五环公路工程有限公司 | Down-the-hole drill and impact drill matched pile foundation pore-forming construction method |
| CN114086571A (en) * | 2021-11-23 | 2022-02-25 | 上海远方基础工程有限公司 | Rock entering grooving construction method by matching small-diameter down-the-hole hammer with groove milling machine |
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Application publication date: 20191203 |
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