CN110528510A - A kind of method that complicated geological carries out the processing of bottom hole spillage - Google Patents
A kind of method that complicated geological carries out the processing of bottom hole spillage Download PDFInfo
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- CN110528510A CN110528510A CN201910791050.9A CN201910791050A CN110528510A CN 110528510 A CN110528510 A CN 110528510A CN 201910791050 A CN201910791050 A CN 201910791050A CN 110528510 A CN110528510 A CN 110528510A
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- cement slurry
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- concrete pile
- mud
- bottom hole
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of methods that complicated geological carries out the processing of bottom hole spillage, it is related to drilling hole bored concrete pile technology field, it aims to solve the problem that and uses bentonite pulping in the prior art, mixes the bad technical problem of dry sawdust solution bottom hole spillage effect, its key points of the technical solution are that cement slurry to be poured into the bottom of priming concrete pile hole by hollow drill pipe, so that cement slurry voluntarily penetrates into the gap of surrounding, the phenomenon that after standing, cement slurry reaches curdled appearance in gap, rapidly, efficiently solves bottom hole spillage.
Description
Technical field
The present invention relates to drilling hole bored concrete pile technology fields, more specifically, it relates to which a kind of complicated geological carries out bottom hole leakage
The method for starching processing.
Background technique
Bored concrete pile system refers in engineering site through means such as machine drilling, steel pipe soil compaction or manpower excavations in foundation soil
Stake holes is formed, and places steel reinforcement cage, concrete perfusion and the stake being made into it, according to forming hole method difference, bored concrete pile again may be used
It is divided into several classes such as driven cast-in-place pile, cast-in-situ bored pile and digging hole filling pile.Wherein the construction of cast-in-situ bored pile is because of retaining wall selected by it
The difference of formation has two kinds of mud off and full-sleeve panelling construction method.
The priming concrete pile hole of below ground in the prior art when construction, first by having set up drilling machine on the ground, passes through brill
Drilling rod on machine drives drill bit to drill ground, to form priming concrete pile hole；In actual construction environment, due to geology
Complexity, Pile Diameter is big and stake is long, and sharp fall occurs suddenly in mud water level in hole, then hole bottom slurry penetrates into ground
In the gap of layer, bore operation can not continue, the side for generally using bentonite pulping in the prior art, mixing the additives such as dry sawdust
Formula carries out leak stopping with the gap to bottom hole, but when the gap of bottom hole is larger, the closure effect of bentonite, sawdust etc. is undesirable, main
If the head pressure that the intensity that the closure such as bentonite, sawdust are formed is not enough to bear when drilling inside and outside priming concrete pile hole is poor, thus
The secondary spillage of bottom hole is caused, thus it is to be improved.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of complicated geological to carry out at bottom hole spillage
The method of reason has the advantage effectively blocked to bottom hole gap.
To achieve the above object, the present invention provides the following technical scheme that
A kind of method that complicated geological carries out the processing of bottom hole spillage, includes the following steps:
S01, during drilling machine normal operation, mud water level declines suddenly in priming concrete pile hole, through overfill slurry, mixes the measures such as dry sawdust
It still cannot keep head height in hole afterwards, to improve plugging effect, control drilling machine at this time and continue to be drilled down into, it is therefore desirable to drill and deposit
On the stratum in gap；Bottom hole to the height between the top of gap stratum is h；
S02 makes cement slurry in blending station, and transports and set construction site；
S03, measured hole bottom absolute altitude promote drilling rod slightly up, measure the water level and record of mud in priming concrete pile hole, which is
H1；The circumferential area of priming concrete pile hole is S；
S04, by hollow drill pipe by the grout pouring of the side amount V made to bottom hole；Continuous observation is perfused in filling process
The variation of mud water level in stake holes after the completion of grout pouring, measures the water level of mud in priming concrete pile hole again, which is
H2；
S05, cement slurry are all poured into bottom hole, and the preset height that mud water level rises in priming concrete pile hole is H=V/S；When H2 is much smaller than
When H1+H, then there is part of cement slurry to penetrate into the gap around priming concrete pile hole；When between H2 and H1+H without biggish difference,
It, will be in the gap around the cement slurry indentation at priming concrete pile hole bottom in priming concrete pile hole plus mud；
The drill bit of hollow drill pipe is promoted to higher than cement slurry absolute altitude face by S06, is then carried out with inside of the clear water to hollow drill pipe
It rinses, the remaining cement slurry of hollow drill pipe is rinsed out;
S07, drilling machine restart bore operation.
By using above-mentioned technical proposal, cement slurry is poured into priming concrete pile hole bottom using hollow drill pipe, cement slurry voluntarily seeps
Thoroughly into gap around, after standing, cement slurry reaches curdled appearance in gap, to effectively be sealed to gap
It is stifled.
Further, in the step S01, the distance that the control drilling machine continues to be drilled down into is no less than 50cm.
By using above-mentioned technical proposal, the distance that hollow drill pipe is drilled down into is no less than 50cm, makes the brill of hollow drill pipe
It is as much as possible to pass through stratum locating for gap, the effect of leak stopping is improved, the number of leak stopping is reduced when gap stratum is thicker.
Further, in the step S02, the proportion of water and cement in the cement slurry is water: cement=0.65:
1。
By using above-mentioned technical proposal, the ratio of mud of cement slurry is 0.65, so that cement slurry has preferable performance indicator,
To tighter to the gap plugging at priming concrete pile hole bottom.
Further, increase following steps in the step S02:
S021 detects the consistency of cement slurry；
S022 adds additive in cement slurry preparation in cement slurry, and the additive is accelerator.
By using above-mentioned technical proposal, the consistency of cement slurry is detected, confirms that the consistency of cement slurry in claimed range, makes
Cement slurry has preferable mobility in construction, has preferable intensity after solidification；To adding accelerator in cement slurry, thus
After cement slurry is poured into priming concrete pile hole bottom, accelerate the solidification of cement slurry.
Further, in the step S03, the distance for promoting drilling rod slightly up is at least 50cm, so that drilling rod
Drill bit elevation of bottom be higher than bottom hole absolute altitude 50cm.
By using above-mentioned technical proposal, the drill bit elevation of bottom of drilling rod is higher than bottom hole absolute altitude 50cm, makes grout injection
When, bottom hole boring mud reduces the resistance that cement slurry flows, meanwhile, so that the cement slurry being perfused from hollow drill pipe is directly reached hole
Bottom avoids being diluted by mud and reducing intensity.
Further, in the step S04, the side measures V=K*S* (h+0.5), and wherein K is permeation effects coefficient, root
According to stratum characteristic, pours the factors such as ability, the characteristic of cement slurry and determine, desirable empirical value 1.5 when no authentic data.
By using above-mentioned technical proposal, guarantee has sufficient amount of cement slurry to penetrate into gap, while also avoiding wave
Take.
Further, increase following steps in the step S06:
S061 during the drill bit for promoting hollow drill pipe, needs to supplement mud into hole in time, makes to promote hollow drill pipe or brill
The water level of mud remains unchanged in hole when head.
It by using above-mentioned technical proposal, avoids during promoting drilling rod, the partial volume of drilling rod or drill bit is from mud
Middle removal, isometric decline of mud water level in hole；The stabilization for guaranteeing the cement slurry being pressed into gap, is unlikely to outside because of hole
Pressure is big in pressure ratio hole and generation flows back, and influences the effect of leak stopping.
Further, increase following steps in the step S07:
S071 stands the cement slurry in priming concrete pile hole for 24 hours before drilling machine again operation.
By using above-mentioned technical proposal, it is ensured that cement slurry reaches ideal intensity, avoids strength of cement grout deficiency gap
Secondary appearance guarantees the effect of leak stopping.
In conclusion the invention has the following advantages:
1, cement slurry is poured by priming concrete pile hole bottom by hollow drill pipe, cement slurry voluntarily penetrates into gap around, by standing
Afterwards, cement slurry reaches curdled appearance in gap, to effectively be blocked to gap；
2, in work progress without dismounting drilling rod, mobile drill, the dismounting processes such as conduit, save a large amount of human and material resources and when
Between.
Detailed description of the invention
Fig. 1 is the schematic diagram of the mud water level of drilling machine normal operation in step S01 in embodiment；
Fig. 2 gets into the schematic diagram when stratum there are gap for drilling rod in step S01 in embodiment；
Fig. 3 is schematic diagram when continuing to be drilled down into the stratum there are gap in embodiment in step S01；
Fig. 4 is the schematic diagram for promoting drilling rod in embodiment in step S03 slightly up；
Fig. 5 is that cement slurry pours into the schematic diagram at priming concrete pile hole bottom in step S04 in embodiment；
Fig. 6 is the schematic diagram stood after the completion of grout pouring in step S06 in embodiment.
In figure: 1, mud；2, gap；3, cement slurry.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment:
A kind of method that complicated geological carries out the processing of bottom hole spillage comprising following steps:
S01, during drilling machine normal operation, 1 water level of mud declines suddenly in priming concrete pile hole, through overfill slurry, mixes dry sawdust etc. and arranges
It still cannot keep head height in priming concrete pile hole after applying, to improve plugging effect, control drilling machine at this time and continue to be drilled down at least
50cm, it is therefore desirable to drill that there are the stratum in gap 2；Measuring the height that bottom hole to 2 stratum of gap is pushed up by lining rope is h；
S02 makes cement slurry 3 at mixing in place station, and to construction site, the proportion of water and cement in cement slurry 3 is for transport
0.65:1；It when preparing cement slurry 3, need to be detected by the consistency of consistometer cement slurry 3, consistency is controlled in 8-12s；And
Additive is added in cement slurry 3, which is accelerator；
S03, by lining rope measured hole bottom absolute altitude, the distance for promoting drilling rod slightly up is at least 50cm, so that the drill bit bottom of drilling rod
Portion's absolute altitude is higher than bottom hole absolute altitude 50cm, measures the water level and record of mud 1 in priming concrete pile hole, which is H1；It surveys simultaneously
The circumferential area for measuring priming concrete pile hole is S；
The cement slurry 3 for side's amount V=K*S* (h+0.5) made is filled into bottom hole by hollow drill pipe by S04, and K is infiltration shadow
Coefficient is rung, according to stratum characteristic, the factors such as ability, the characteristic of cement slurry 3 is poured and determines, desirable empirical value K when no authentic data=
1.5；In filling process in continuous observation priming concrete pile hole 1 water level of mud variation, cement slurry 3 be perfused after the completion of, again by survey
The water level of mud 1 in fathom amount priming concrete pile hole, the water level are H2；
S05, cement slurry 3 are all poured into bottom hole, and the preset height that 1 water level of mud rises in priming concrete pile hole is H=V/S；When H2 is far small
When H1+H, then there is part of cement slurry 3 to penetrate into the gap 2 around priming concrete pile hole；When between H2 and H1+H without biggish difference
When value, in priming concrete pile hole plus mud 1, the cement slurry 3 at priming concrete pile hole bottom is pressed into the gap 2 of surrounding formation；
The drill bit of hollow drill pipe is promoted to higher than 3 absolute altitude face of cement slurry by S06, during the drill bit for promoting hollow drill pipe, is needed
Mud 1 is supplemented into priming concrete pile hole in time, the water level of mud 1 remains unchanged in hole when making to promote hollow drill pipe or drill bit, so
It is rinsed afterwards with inside of the clear water to hollow drill pipe, the remaining cement slurry 3 of hollow drill pipe is rinsed out；
S07 stands the cement slurry 3 in priming concrete pile hole for 24 hours, and drilling machine restarts bore operation.
The bottom that cement slurry 3 is poured into in the present embodiment by hollow drill pipe priming concrete pile hole, so that cement slurry 3 voluntarily permeates
Into the gap of surrounding 2, after standing, cement slurry 3 reaches curdled appearance in gap 2, rapidly, efficiently solves bored concrete pile
The phenomenon that bottom hole spillage.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (8)
1. a kind of method that complicated geological carries out the processing of bottom hole spillage, characterized by the following steps:
S01, during drilling machine normal operation, mud (1) water level declines suddenly in priming concrete pile hole, starched through overfill, mix dry sawdust etc.
Measure still cannot keep head height in hole, to improve plugging effect, controls drilling machine at this time and continues to be drilled down into, it is therefore desirable to bore
It wears there are the stratum of gap (2), the height between the top of bottom hole to gap (2) stratum is h；
S02 makes cement slurry (3) in blending station, and transports to construction site；
S03, measured hole bottom absolute altitude promote drilling rod slightly up, measure the water level and record of mud in priming concrete pile hole, which is
H1；The circumferential area for measuring priming concrete pile hole simultaneously is S；
The side made is measured by hollow drill pipe and is filled into bottom hole for the cement slurry (3) of V by S04；Continuous observation in filling process
The variation of mud (1) water level in priming concrete pile hole measures the water of mud (1) in priming concrete pile hole after the completion of cement slurry (3) perfusion again
Position, the water level are H2；
S05, cement slurry (3) all pour into bottom hole, and the preset height after mud (1) water level rises in priming concrete pile hole is H=V/S；When
When H2 is much smaller than H1+H, then there is part of cement slurry (3) to penetrate into the gap around priming concrete pile hole (2)；When between H2 and H1+H
When without biggish difference, add mud (1) in priming concrete pile hole, by the seam of cement slurry (3) the indentation surrounding formation at priming concrete pile hole bottom
In gap (2)；
The drill bit of hollow drill pipe is promoted to higher than cement slurry (3) absolute altitude face, then with clear water to the inside of hollow drill pipe by S06
It is rinsed, cement slurry (3) remaining in Zhong Kong An is rinsed out；
S07, drilling machine restart bore operation.
2. the method that a kind of complicated geological according to claim 1 carries out the processing of bottom hole spillage, it is characterised in that: described
In step S01, control drilling machine continues to move down the distance of drilling not less than 50cm.
3. the method that a kind of complicated geological according to claim 1 carries out the processing of bottom hole spillage, it is characterised in that: described
In step S02, the proportion of water and cement in the cement slurry (3) is water: cement=0.65:1.
4. the method that a kind of complicated geological according to claim 2 carries out the processing of bottom hole spillage, it is characterised in that: described
Increase following steps in step S02:
S021 detects the consistency of cement slurry (3)；
S022 adds additive when prepared by cement slurry (3) in cement slurry (3), and the additive is accelerator.
5. the method that a kind of complicated geological according to claim 1 carries out the processing of bottom hole spillage, it is characterised in that: described
In step S03, the distance for promoting drilling rod slightly up is at least 50cm, so that the drill bit elevation of bottom of drilling rod is higher than bottom hole absolute altitude
50cm.
6. the method that a kind of complicated geological according to claim 1 carries out the processing of bottom hole spillage, it is characterised in that: described
In step S04, the side measures V=K*S* (h+0.5), and wherein K is permeation effects coefficient, according to stratum characteristic, pours ability and water
The characteristic of mud is determined, and when no authentic data rule of thumb takes K=1.5.
7. the method that a kind of complicated geological according to claim 1 carries out the processing of bottom hole spillage, it is characterised in that: described
Increase following steps in step S06:
S061 during the drill bit for promoting hollow drill pipe, needs to supplement mud (1) into priming concrete pile hole in time, make in promotion
The water level of mud (1) remains unchanged in priming concrete pile hole when empty drilling rod.
8. the method that a kind of complicated geological according to claim 1 carries out the processing of bottom hole spillage, it is characterised in that: described
Increase following steps in step S07:
S071 stands the cement slurry (3) in priming concrete pile hole for 24 hours before drilling machine again operation.
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| CN201910791050.9A CN110528510A (en) | 2019-08-26 | 2019-08-26 | A kind of method that complicated geological carries out the processing of bottom hole spillage |
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| CN201910791050.9A CN110528510A (en) | 2019-08-26 | 2019-08-26 | A kind of method that complicated geological carries out the processing of bottom hole spillage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030957A (en) * | 2020-08-12 | 2020-12-04 | 湖南中耀交通工程有限公司 | Method for treating hole bottom slurry leakage in complex geology |
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| CN106049467A (en) * | 2016-08-02 | 2016-10-26 | 中铁六局集团有限公司 | Method for treating slurry leakage of bored pile through percussion drill under complex geology |
| CN106894418A (en) * | 2017-02-28 | 2017-06-27 | 济南轨道交通集团有限公司 | A kind of metalling plants the running pulp administering method of prefabricated pile |
| CN108612086A (en) * | 2018-05-07 | 2018-10-02 | 安徽省公路桥梁工程有限公司 | A kind of crack geotechnical boring cast-in-place pile construction method |
| CN109113051A (en) * | 2018-09-30 | 2019-01-01 | 中交第三航务工程局有限公司 | The method of bored pile construction work efficiency is improved under the conditions of karsts developing area |
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| CN112030957A (en) * | 2020-08-12 | 2020-12-04 | 湖南中耀交通工程有限公司 | Method for treating hole bottom slurry leakage in complex geology |
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Application publication date: 20191203 |