CN106639870A - Drilling hole-forming process of rock-socketed pile - Google Patents
Drilling hole-forming process of rock-socketed pile Download PDFInfo
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- CN106639870A CN106639870A CN201611191792.0A CN201611191792A CN106639870A CN 106639870 A CN106639870 A CN 106639870A CN 201611191792 A CN201611191792 A CN 201611191792A CN 106639870 A CN106639870 A CN 106639870A
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- guider
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- drill bit
- steel sleeve
- hole
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- 238000005553 drilling Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 238000010276 construction Methods 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 15
- 239000011435 rock Substances 0.000 claims description 55
- 239000004575 stone Substances 0.000 claims description 13
- 231100000241 scar Toxicity 0.000 claims description 8
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 4
- 235000013312 flour Nutrition 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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
- E21B7/00—Special methods or apparatus for drilling
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a drilling hole-forming process of a rock-socketed pile. The drilling hole-forming process includes the following steps that under the guiding action of a steel sleeve and first guiders, a portion, with the steel sleeve, of the rock-socketed pile is drilled to form a hole through a first drill bit; under the combined guiding action of a second guider and the first guiders, the rock-socketed section without the steel sleeve is drilled to form a guiding hole through a second drill bit; and after drilling of the guiding hole is finished, the second guider is dismantled, the second drill bit is replaced with a third drill bit, a third guider is mounted at the front end of the third drill bit, under the combined guiding action of the third guider and the first guiders, drilling of a final formed hole is performed, and the third guider is always located in the guiding hole in the drilling process. By means of the drilling hole-forming process of the rock-socketed pile, the effect that the slopes of the drill bits are kept consistent with the slope of the steel sleeve during construction of an oblique rock-socketed pile can be well guaranteed, the hole-forming quality is improved, the hole walls are smooth, intact and high in straightness, the construction requirements are met, and the construction efficiency is improved. The drilling hole-forming process of the rock-socketed pile is easy to implement, low in construction cost and good in economic benefits.
Description
Technical field
The present invention relates to port and pier tube pile construction technical field, and in particular to a kind of drilling and forming hole technique of embedded rock pile.
Background technology
Be the requirement for meeting bearing capacity in Wharf Engineering structure, it is commonly used to embedded rock pile technology, embedded rock pile be compared with
One of conventional pile foundation engineering, mainly straight stake, also there is part taper pile.Drilling and forming hole technique is that oblique Pile is most important
One ring, because the oblique embedded rock pile of overlength is susceptible to off normal using percussion drilling construction, blocks the problems such as hammering into shape, at present in the oblique embedding rock of overlength
In stake drilling and forming hole technique using convolution rig construction effect more preferably.But in convolution rig work progress, the deadweight of drilling tool
Drilling tool sag bent, the guidance quality of drill bit and the axis of drill bit will be caused to produce larger deviation so that drill bit slope and steel
Sleeve pipe slope cannot be consistent, and affect hole quality, particularly be more than 10m in rock-socketed piles depth, and part embedded rock pile inclines
When gradient is larger, easily there is pore-forming and incline not straight problem, difficulty of construction is larger, and existing drilling and forming hole technique cannot meet
The requirement of construction.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of drilling and forming hole technique of embedded rock pile, ensure that oblique embedding rock
Drill bit slope is consistent with steel sleeve slope in pile driving construction, improves hole quality and efficiency, meets detail design requirement.
In order to solve above-mentioned technical problem, the technical scheme that the present invention is provided is as follows：
A kind of drilling and forming hole technique of embedded rock pile, comprises the following steps：
1）First guider and the first drill bit are installed inside steel sleeve, and in the guide effect of steel sleeve and the first guider
Under, there is steel bushing tube portion to drill to embedded rock pile；
2）Be the second drill bit by the first bit change-over, and the second guider be installed in the second drill bit rear end, in the second guider and
Under the common guide effect of the first guider, to carrying out pilot hole drilling without steel sleeve in-rock segment, in drilling process, first is oriented to
Device is always positioned inside steel sleeve, and the second guider follows the second drill bit to progress in pilot hole, the drilling of the pilot hole
Depth is more than design socket length；
3）Pilot hole drilling after the completion of, remove the second guider and by the second bit change-over be the 3rd drill bit, before the 3rd drill bit
The 3rd guider is installed at end, and under the common guide effect of the 3rd guider and the first guider, carries out the brill of final pore-forming
Enter, the 3rd guider is always positioned in the pilot hole in drilling process, the first guider is always positioned inside steel sleeve.
The diameter of first guider is identical with steel bushing bore, the diameter of the second guider and the 3rd guider it is straight
Footpath is identical with pilot hole internal diameter.
First bit diameter is identical with the internal diameter of steel sleeve, and the second bit diameter is identical with the diameter of pilot hole, the
Three bit diameters are identical with the diameter of final pore-forming.
The step 1）, step 2）With step 3）Drilling process circled round drilling process using reacting cycle, it is described counter to follow
Loopback revolves drilling process, specially：Convolution rig rotary presser, is crept into the broken scar of drill bit, recycles pump machine broken
The stone or stone flour that detritus face produces is suctioned out from hollow drilling rod.
The steel sleeve inside arranges multiple first guiders.
First guider is equally arranged.
First guider, the second guider and the 3rd guider are connected by bearing with drilling rod.
The top and bottom of first guider, the second guider and the 3rd guider are machined with chamfering.
The top and bottom of first drill bit, the second drill bit and the 3rd drill bit are machined with chamfering.
The step 2）The drilling of middle pilot hole is constructed complete several times.
The invention has the advantages that：The drilling and forming hole technique of the present invention, to adopting subdrilling without steel sleeve in-rock segment
Pilot hole carries out again the mode of pore-forming drilling, using pilot hole and the guide and limit of steel sleeve, and coordinate the first guider, second
The use of guider and the 3rd guider, can well ensure that drill bit slope is protected with steel sleeve slope in tilted socketed pile construction
Hold consistent, improve hole quality, make smooth complete, the straight degree of hole wall high, meet construction requirement, improve efficiency of construction；Should
Technological operation is simple, and construction cost is low, with preferable economic benefit.
Description of the drawings
Fig. 1 is the boring principle figure that embedded rock pile has steel bushing tube portion；
Fig. 2 is without steel sleeve in-rock segment pilot hole boring principle figure；
Fig. 3 is without the final pore-forming boring principle figure of steel sleeve in-rock segment；
In figure：1st, the first drill bit, the 2, first guider, 3, drilling rod, 4, steel sleeve, the 5, second drill bit, the 6, second guider, 7,
Three drill bits, the 8, the 3rd guider.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with specific embodiment, so that those skilled in the art can be with
More fully understand the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
The present invention is applied to the cleat construction project in crude oil berth, and the embedded rock pile being related in cleat construction project is applied
Work technique, and in particular to the drilling and forming hole technique in the construction of tunneling boring tilted socketed pile.
Overburden cover situation at cleat is：Forward position selects the severely-weathered tufa stone of prose style free from parallelism shape as pile-base supporting layer,
Afterwards along selection medium weathering tufa stone as pile-base supporting layer.Coating is respectively from top to bottom：1. 1.9～2.8m thick grey
Mud containing rubble；0.1～5.1m thick variegated cohesive soil containing rubble；2. 4.6～7.6m thick sallow～celadon silty clay；
3. 0.8～7.8m thick severely-weathered the tufa stone of prose style free from parallelism shape, this is forward position pile-base supporting layer；4. 2.6～4.2m thick cataclastic shape is strong
Weathering tufa stone；5. bottom is medium weathering tufa stone, and this is rear along pile-base supporting layer.
The cleat of this engineering is supported by eight embedded rock piles, and embedded rock pile supporting course is mainly severely-weathered tufa stone, is partly
Middle weathering tufa stone, supporting course Standard penetration test blow count N is all higher than 50.Shown according to geologic information, the ZK15 holes near cleat
Saturation uniaxial compressive strength is 30.56MPa, and ZK16 holes saturation uniaxial compressive strength is 87.05MPa.Saturation uniaxial compressive strength
Rock more than 60MPa is hard rock, and rotary drilling rig is difficult to construct.Because embedded rock pile is relatively large in diameter, socket length reaches 18m, portion
Divide embedded rock pile gradient up to 5:1, off normal is susceptible to according to percussive drill, block the problems such as hammering into shape, therefore this engineering configures one instead
Circulation abrasion drill machine carries out construction operation.
Drilling rod 3 is the sections of every 2m mono- in the present embodiment, extensible.Using threaded connection between adjacent drill pipes.
The internal diameter of steel sleeve 4 is 1.8m in this example.
It is equipped with three kinds of drill bits, a diameter of 1.8m of the first drill bit 1, for drilling in steel sleeve 4；The diameter of the second drill bit 5
For 1m, for creeping into pilot hole（Diameter 1m）；A diameter of 1.6m of the 3rd drill bit 7, Ye Jiyu consistent with design embedded rock pile diameter
Final pore-forming（Diameter 1.6m）Diameter it is identical.
Three kinds of guiders are equipped with, the diameter of the first guider 2 is consistent with the internal diameter of steel sleeve 4, every 8m one is arranged；The
The diameter of two guiders 6 is consistent with the diameter of the second drill bit 5, is 1m, and the length of the second guider 6 is 2.4m, the 3rd guider 8
A diameter of 1m, length is 0.8m, and the second guider 6 and the 3rd guider 8 are used to be oriented in pilot hole.
The drilling and forming hole technique of embedded rock pile, comprises the following steps：
1）Embedded rock pile has the drilling of steel bushing tube portion：
As shown in figure 1, the first guider 2 and the first drill bit 1 are set inside steel sleeve 4, in the guider 2 of steel sleeve 4 and first
Guide effect under, have steel bushing tube portion to drill to embedded rock pile.
Wherein the first guider 2 is connected with drilling rod 3, and drilling rod 3 is connected with the first drill bit 1.
First drill bit 1 adopts three wings drag bit.
2）Drilling without steel sleeve in-rock segment pilot hole：
As shown in Fig. 2 the first drill bit 1 is replaced by into the second drill bit 5, and the second guider is connected with the rear end of the second drill bit 5
6, under the common guide effect of the second guider 6 and the first guider 2, to carrying out pilot hole drilling without steel sleeve in-rock segment,
So that the second drill bit 5 linearly advances all the time in drilling process；In drilling process, the first guider 2 is always positioned at steel bushing
Inside pipe 4, the second guider 6 is progressed in pilot hole, and the drilling depth of pilot hole is more than design socket length.
Wherein a diameter of 1m of pilot hole, the second guider 6 is connected with drilling rod 3, and drilling rod 3 is connected with the first guider 2
Connect.
Second drill bit 5 adopts drag bit.
Preferably, the second drill bit 5 is connected with the drilling rod in the second guider 6 by flange so that connection more firmly may be used
Lean on.
The drilling process of pilot hole can once construct and complete, it is preferred that to reduce the side-play amount of the second drill bit 5, be oriented to
The drilling process in hole is constructed at twice, and 10m is bored for the first time, and residue length is crept into for second and completed.
3）Drilling without the final pore-forming of steel sleeve in-rock segment
As shown in figure 3, after the completion of pilot hole drilling, the second drill bit 5 is replaced by into the 3rd drill bit 7, and connect in the front end of the 3rd drill bit 7
The 3rd guider 8 is connected to, and under the common guide effect of the 3rd guider 8 and the first guider 2, carries out final pore-forming (straight
Footpath is 1.6m) drilling.In final pore-forming drilling process, the 3rd guider 8 is remained in pilot hole, the first guider 2
It is always positioned inside steel sleeve so that under the common guiding and position-limiting action of the 3rd guider 8 and the first guider 2, it is ensured that
The straight degree of final pore-forming drilling.
A diameter of 1.6m of final pore-forming.
3rd drill bit 7 adopts drag bit.
Preferably, the 3rd drill bit 7 is connected with the drilling rod in the 3rd guider 8 by flange, so that connection more firmly may be used
Lean on, the 3rd drill bit 7 is connected with drilling rod 3, drilling rod 3 is connected with the first guider 2.
Above-mentioned steps 1）, step 2）With step 3）Drilling process using reacting cycle circle round drilling process.
Reacting cycle convolution drilling process is to make the scraper or gear wheel of chisel edge setting broken using convolution rig rotary presser
The broken scar for contacting, the stone or stone flour that recycling pump machine produces broken scar is suctioned out from hollow drilling rod, is crept into
Process will supplement clear water into hole always makes liquid level in hole be maintained at higher level, makes the certain hydraulic pressure of holding with retaining hole in the hole in
Wall is stablized.
Further, the arrangement pitch and quantity of the first guider 2 inside steel sleeve 4 can enter according to concrete drilling situation
Row adjustment, both non-equidistance arrangement can be may also be employed between the first guider 2 using being equally spaced.Adjacent first is led
Connected by drilling rod between device 2.
Preferably, the first guider 2, the second guider 6 and the 3rd guider 8 are connected by bearing with drilling rod, are made
When obtaining drilling rod rotation, the first guider 2, the second guider 6 and the 3rd guider 8 will not rotate with drilling rod, prevent because above-mentioned
Each guider and the contact friction of pilot hole or steel sleeve and wear and tear, so as to prevent cannot realizing that it is led because guider weares and teares
To and position-limiting action.
Preferably, the top and bottom of the first guider 2 are machined with chamfering, and the top and bottom of the second guider 6 are equal
Chamfering is machined with, the top and bottom of the 3rd guider 8 are machined with chamfering, and the top and bottom of the first drill bit 1 process
There are chamfering, the top and bottom of the second drill bit 5 to be machined with chamfering, the top and bottom of the 3rd drill bit 7 and be machined with chamfering,
Guider and drill bit are arranged there is card hammer phenomenon when chamfering can prevent from drilling or carrying drill bit.
The present embodiment when carrying out embedded rock pile and having the drilling of steel bushing tube portion, by by 4 pairs of the first guiders 2 of steel sleeve
The guide and limit of 4 pairs of the first drill bits 1 of guide and limit and steel sleeve combines, and the drilling of the first drill bit 1 is oriented to jointly,
Can ensure that drill bit slope is consistent with steel sleeve slope in drilling process, in addition steel sleeve 4 also acts as retaining wall effect；It is being oriented to
Hole（Diameter 1m）During drilling, by the way that the spacing of 4 pairs of the first guiders 2 of the guide and limit of the second guider 6 and steel sleeve is mutually tied
Close, the drilling of the second drill bit 5 is oriented to jointly, it is ensured that drill bit slope and drill center position are consistent with design load；
Final pore-forming（A diameter of 1.6m）During drilling, remained in pilot hole by making the 3rd guider 8 so that pilot hole is to
Three guiders 8 play position-limiting action well, in conjunction with the position-limiting action of 4 pairs of the first guiders 2 of steel sleeve, finally bore to the 3rd
7 drilling process plays preferable guide effect, ensure that the straight degree of final pore-forming drilling, is oriented to additionally, due to the 3rd
Device 8 is arranged on the front end of the 3rd drill bit 7, therefore when pilot hole drilling is carried out before, the drilling depth of pilot hole is greater than and sets
Meter socket length 1m, to guarantee that the drilling depth of the final pore-forming that the 3rd drill bit 7 is crept into can reach design load.
Pilot hole primarily serves guiding and spacing effect in the present embodiment, prevents drill bit during drilling taper pile by weight
Power function influence causes pore-forming to be inclined to camber line to gravity direction, and so as to avoid, initiation card is hammered into shape, steel reinforcement cage cannot be transferred, embedded rock pile
The problems such as depression of bearing force.
The drilling and forming hole technique of the present embodiment adopts clear water reacting cycle, substantially without sediment, scarfing cinder effect after reacting cycle borehole cleaning
Preferably, reacting cycle, the more conducively environmental protection of job site are carried out compared to using mud；After pore-forming, hole wall is smooth complete, suitable
Straight degree is high, and slop control is good, is easy to descending reinforcing cage process to be smoothed out.
In drilling process, rig adjustment of rotational speed is carried out according to drilling depth, specially：Will go out steel sleeve 4 in drill bit
Bottom when slow down rotating speed, prevent that rotating speed is too fast to cause that hole wall is unstable to occur the accidents such as collapse hole, card hammer；Drill bit enter more than rock 4m and
Faster rotational speed drilling efficiency can be improved in the case that hole wall is stable；Rotating speed can be improved in the case that the more complete hole wall of basement rock is stable,
Rotating speed should be reduced in the case that the broken crack of basement rock is unstable compared with development hole wall, hole wall collapse is prevented.
Drilling process such as drilling difficulty can take the measure for increasing counterweight or more bit change：
1st, increase counterweight, need that the drilling rod for having welded balancing weight is connected on common drilling rod when increasing counterweight.Increase is matched somebody with somebody
The gravity of weight is delivered to scar by drill bit, and one of scar is pressurizeed equivalent to drill bit, and appropriate pressurization can improve drilling efficiency.
2nd, drill bit, the two kinds of drill bit of this Process configuration are replaced, one kind is drag bit, and one kind is roller cutter bit,
Drag bit is cut to the broken scraper mainly arranged by chisel edge of rock stratum to rock stratum, the drilling of drag bit
Efficiency high, it is adaptable to the relatively low rock stratum of intensity；For the higher drag bit of intensity is difficult to the rock stratum cut, enter using roller cutter bit
Row drilling, roller cutter bit is ground to the broken gear wheel mainly arranged by chisel edge of rock stratum to rock stratum, hobboing cutter
Drill bit drilling efficiency is relatively low, but can grind the larger rock stratum of intensity.
If running into the bedrock surface in ramped shaped in drilling process, construction can be caused unfavorable, be easily caused drill bit in drilling
During offset axis, scar is broken that situations such as reaming, even sinking steel protecting canister occurs.Therefore the basement rock of ramped shaped is being run into
During face, the pressure of the drill can be reduced, rig rotating speed is reduced, construction is further continued for after ramped shaped bedrock surface is polished.
Embodiment described above is only the preferred embodiment lifted to absolutely prove the present invention, the protection model of the present invention
Enclose not limited to this.Equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (10)
1. a kind of drilling and forming hole technique of embedded rock pile, is characterized in that, comprise the following steps：
1）First guider and the first drill bit are installed inside steel sleeve, and in the guide effect of steel sleeve and the first guider
Under, there is steel bushing tube portion to drill to embedded rock pile；
2）Be the second drill bit by the first bit change-over, and the second guider be installed in the second drill bit rear end, in the second guider and
Under the common guide effect of the first guider, to carrying out pilot hole drilling without steel sleeve in-rock segment, in drilling process, first is oriented to
Device is always positioned inside steel sleeve, and the second guider follows the second drill bit to progress in pilot hole, the drilling of the pilot hole
Depth is more than design socket length；
3）Pilot hole drilling after the completion of, remove the second guider and by the second bit change-over be the 3rd drill bit, before the 3rd drill bit
The 3rd guider is installed at end, and under the common guide effect of the 3rd guider and the first guider, carries out the brill of final pore-forming
Enter, the 3rd guider is always positioned in the pilot hole in drilling process, the first guider is always positioned inside steel sleeve.
2. the drilling and forming hole technique of embedded rock pile as claimed in claim 1, is characterized in that, the diameter and steel of first guider
Casing inner diameter is identical, and the diameter of the diameter of the second guider and the 3rd guider is identical with pilot hole internal diameter.
3. the drilling and forming hole technique of embedded rock pile as claimed in claim 1, is characterized in that, first bit diameter and steel sleeve
Internal diameter it is identical, the second bit diameter is identical with the diameter of pilot hole, and the 3rd bit diameter is identical with the diameter of final pore-forming.
4. the drilling and forming hole technique of embedded rock pile as claimed in claim 1, is characterized in that, the step 1）, step 2）And step
3）Drilling process circled round drilling process using reacting cycle, the reacting cycle circles round drilling process, specially：Convolution rig rotation
Turn pressurization, crept into the broken scar of drill bit, recycle the stone or stone flour that pump machine produces broken scar from hollow brill
Suction out in bar.
5. the drilling and forming hole technique of embedded rock pile as claimed in claim 1, is characterized in that, steel sleeve inside arranges multiple the
One guider.
6. the drilling and forming hole technique of embedded rock pile as claimed in claim 5, is characterized in that, first guider equally cloth
Put.
7. the drilling and forming hole technique of embedded rock pile as claimed in claim 1, is characterized in that, first guider, second are oriented to
Device and the 3rd guider are connected by bearing with drilling rod.
8. the drilling and forming hole technique of embedded rock pile as claimed in claim 1, is characterized in that, first guider, second are oriented to
The top and bottom of device and three guiders are machined with chamfering.
9. the drilling and forming hole technique of embedded rock pile as claimed in claim 1, is characterized in that, first drill bit, the second drill bit with
And the 3rd the top and bottom of drill bit be machined with chamfering.
10. the drilling and forming hole technique of embedded rock pile as claimed in claim 1, is characterized in that, the step 2）The brill of middle pilot hole
Enter construction several times to complete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191792.0A CN106639870B (en) | 2016-12-21 | 2016-12-21 | A kind of drilling and forming hole technique of embedded rock pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191792.0A CN106639870B (en) | 2016-12-21 | 2016-12-21 | A kind of drilling and forming hole technique of embedded rock pile |
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| CN106639870B CN106639870B (en) | 2018-11-30 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386141A (en) * | 2018-04-24 | 2018-08-10 | 上海兴怡基础工程有限公司 | A kind of combined type multistage dewatering well drilling rod |
| CN108868611A (en) * | 2018-07-26 | 2018-11-23 | 北京首尔工程技术有限公司 | Drilling method for correcting error and its deviation correcting device based on casing follow-up |
| CN110886577A (en) * | 2019-11-29 | 2020-03-17 | 深圳宏业基岩土科技股份有限公司 | Construction method for perpendicularity control of rotary excavating hard secant pile in deep and thick rockfill area |
| CN111677439A (en) * | 2020-06-24 | 2020-09-18 | 中建四局土木工程有限公司 | Drilling hole forming method of reverse circulation rotary drilling machine |
| CN111706261A (en) * | 2020-06-24 | 2020-09-25 | 中建四局土木工程有限公司 | Construction method for gas lift slag-return pore-forming of roller drill of large-diameter ultralong rock-socketed pile |
| CN112196461A (en) * | 2020-09-23 | 2021-01-08 | 贵州建工集团第一建筑工程有限责任公司 | Side slope damping drilling method |
| CN112901074A (en) * | 2021-03-10 | 2021-06-04 | 中交第三航务工程局有限公司宁波分公司 | Rock-socketed drilling pore-forming process of marine large-diameter inclined pile rotary excavator |
| CN113738266A (en) * | 2021-08-27 | 2021-12-03 | 中交第二航务工程局有限公司 | Multi-stage drill bit fractional drilling pore-forming method of combined rotary drilling rig |
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| CN112196461A (en) * | 2020-09-23 | 2021-01-08 | 贵州建工集团第一建筑工程有限责任公司 | Side slope damping drilling method |
| CN112901074A (en) * | 2021-03-10 | 2021-06-04 | 中交第三航务工程局有限公司宁波分公司 | Rock-socketed drilling pore-forming process of marine large-diameter inclined pile rotary excavator |
| CN112901074B (en) * | 2021-03-10 | 2024-02-13 | 中交第三航务工程局有限公司 | Rock-socketed drilling pore-forming technology of offshore large-diameter inclined pile rotary digging machine |
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