CN105937377A - Air lift reverse circulation borehole cleaning method - Google Patents
Air lift reverse circulation borehole cleaning method Download PDFInfo
- Publication number
- CN105937377A CN105937377A CN201610405611.3A CN201610405611A CN105937377A CN 105937377 A CN105937377 A CN 105937377A CN 201610405611 A CN201610405611 A CN 201610405611A CN 105937377 A CN105937377 A CN 105937377A
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- China
- Prior art keywords
- mud
- reverse circulation
- conduit
- clear hole
- lift reverse
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
Abstract
The invention provides an air lift reverse circulation borehole cleaning method. The method comprises the steps of compressed air injection through which mixed mud rising along the inner wall of a conduit in a reverse circulation mode is obtained; mud extraction, wherein a mud extraction device extracts the mixed mud rising to the top end of the conduit into a mud purification device; mud purification, wherein the mud purification device filters out boring mud in the mixed slurry and discharges purified mud; mud backflow, wherein the mud purification device enables purified mud to flow back into a pile hole. By injecting compressed air into the conduit constantly through an air compressor, a mud and air mixture with density smaller than that of mud above is formed in the conduit, reverse circulation fluid with extremely high flow rate is formed through mixing of air, mud and rock debris, the mixed slurry is extracted out through the mud extraction device, the rock debris is filtered out through the mud purification device, and the purified mud flows back to the pile hole. The borehole cleaning system can clean a borehole thoroughly, time consumption is low, and then drilling and pile construction efficiency is improved and the quality of a formed pile is improved.
Description
Technical field
The application relates to building field, particularly relates to a kind of gas lift reverse circulation clear hole method.
Background technology
The mode that a technology is a kind of basis piling conventional in construction is built in boring, and boring is built stake and had because of it
Having that bearing capacity is big, good stability, settling amount is little, is affected less etc. by working water level or level of ground water height
Advantage, is widely used in all kinds of foundation engineering, particularly rotation digging hole filling pile efficiency is high, pollute less,
The feature such as function is many and construction quality is guaranteed, has adapted to the demand of above-mentioned comprehensive development, at cast-in-situ bored pile
Construction is widely applied.Boring is built stake and is drilled through prismatic stake holes initially with drill bit, for making to water
The pile body building up type has more preferable supporting role, is also performed to reaming after boring reaches desired depth.?
After steel reinforcement cage put into placing concrete in stake holes.And must also carry out in stake holes before placing concrete
Cleaning, gets rid of and turns the dregs in hole and boring mud.Existing clear hole technology mainly includes the clear hole of direct circulation and reacting cycle
Clear hole, in general to use direct circulation to be suitable for hole depth shallower in clear hole, because along with hole depth increases mud in hole
Scum silica frost ability is gradually lowered, and after the stake holes degree of depth is more than 60m, direct circulation clear hole drill slag is more difficult by mud certainly
Float with it, or the longest, and mud also easily forms layering present situation in hole, and upper strata proportion is less, and under
Layer proportion is relatively big, and has precipitated substantial amounts of boring mud.And traditional reacting cycle clear hole technique is also difficult to meet the most directly
The clear hole requirement of footpath ultra-deep stake, as easy as rolling off a log because being not good in clear hole, the factor such as clear hole overlong time, causes the later stage to fill
Note pile quality problem.
Application content
The application provides a kind of for gas lift reverse circulation clear hole method, it is intended to solves existing boring and builds in an operation,
The problem of pile quality is not good at affecting in clear hole.
A kind of gas lift reverse circulation clear hole method, including:
Compressed air is injected, injecting compressed air in the conduit in stake holes, follows along pipe inner wall is counter to obtain
The mixing mud that ring rises；
Extraction mud, mud draw-out device will rise to the mixing mud suction mud purifying device of catheter tip；
Mud purification, the boring mud in mixed serum is filtered out by described mud purifying device, and will purify after
Mud is discharged；
Mud refluxes, and the mud after mud purifying device will purify passes back in stake holes.
Described gas lift reverse circulation clear hole method, wherein, described compressed air by air compressor machine inject described in lead
In pipe, described air compressor machine gas outlet is by appendix and described duct wall UNICOM.
Described gas lift reverse circulation clear hole method, wherein, described mud purifying device includes for purifying mud
Mud pit, be provided with the screen cloth for filtering boring mud in the middle part of described mud pit.
Described gas lift reverse circulation clear hole method, wherein, described mud pit includes stock inlet and grout outlet, institute
Stating stock inlet and be positioned at described screen cloth upper end, described grout outlet is positioned at the lower end of described screen cloth.
Described gas lift reverse circulation clear hole method, wherein, described mud purification step specifically includes:
Filtering slurry, is injected mud pit by mixing mud by the pulp inlet at screen cloth top；
Boring mud is removed, and boring mud screen surface leached is removed.
Described gas lift reverse circulation clear hole method, wherein, also includes mobile conduit, by leading of suspention conduit
Pipe fixing device drives conduit to move back and forth in the horizontal direction.
Described gas lift reverse circulation clear hole method, wherein, also includes before described mud purification,
Mud particle degree detects, and the mud extracted out in conduit is carried out sample detecting, by the mud of detection
Granularity judges that boring mud content is the most up to standard, if up to standard, stop injecting compressed air, and empties the mud in stake holes
Slurry.
Gas lift reverse circulation clear hole method given by the application, by injecting compression in the continuous conductive pipe of air compressor machine
Air so that in conduit, mud forms a kind of density slurry gas mixture less than top mud, and at interior external pressure
Rise along conduit cavity under power difference and compressed air synergy, drive the interior mud of pipe and landwaste to flow up,
Form air, mud and landwaste and be mixed to form flow velocity, flow great reacting cycle fluid, thus, carry
Sediment rises from the bottom of hole, then is extracted out by mixed serum by mud draw-out device, mud purifying device filter rock
Bits, and the slurry reflux after purifying is in stake holes.This system clear hole, clear hole effect is thorough, and the used time is few, from
And improve the quality after the efficiency of stake and pile body molding are built in boring.
Accompanying drawing explanation
Fig. 1 is in the embodiment of the present application one, the structural representation of gas lift reverse circulation clear hole system；
Fig. 2 is in the embodiment of the present application one, the structural representation of mud pit；
Fig. 3 is in the embodiment of the present application two, the flow chart of gas lift reverse circulation clear hole method.
Detailed description of the invention
Combine accompanying drawing below by detailed description of the invention the application is described in further detail.
Embodiment one,
Gas lift reverse circulation clear hole system given by the present embodiment, including Pneumatic mixing device, mud extraction dress
Put and mud purifying device 5.As it is shown in figure 1, Pneumatic mixing device includes air force original paper and conduit 2.
Wherein, air force original paper is air compressor machine 1, and more than the liquid level of stake holes 3 is stretched out on conduit 2 top, and bottom is deep
To stake holes 3, sidewall is by the gas outlet UNICOM of appendix 21 with air compressor machine 1.Mud draw-out device bag
Including slush pump 4, the suction side of slush pump 4 is by the mud UNICOM of pipeline with conduit 2 top, this pipeline one end
Submerge below mud liquid level.The outfan of slush pump 4 and mud purifying device 5 UNICOM.
Further, as Figure 1-Figure 2, mud purifying device 5 includes the mud pit for purifying mud
51, the middle part of mud pit 51 is provided with the screen cloth 52 covering whole mud pit cross section, and mud pit 51 sidewall is positioned at
Screen cloth 52 upper end is provided with stock inlet 53, is positioned at screen cloth 52 bottom and is provided with grout outlet 54.Stock inlet 53
With the outfan UNICOM of slush pump 4, grout outlet 54 and reflux line 55 UNICOM, reflux line 55 one end is even
Meet grout outlet 54, the other end and the mud UNICOM in stake holes 3.
It is also preferred that the left as it is shown in figure 1, conduit 2 is suspended in the top of stake holes 3 by catheter anchoring system 6,
Catheter anchoring system 6 drives conduit 2 ceaselessly to move in stake holes 3 so that in compressed gas and stake holes 3
Mud slurry uniform contact.Wherein, catheter anchoring system 6 is crane.
Gas lift reverse circulation clear hole system given by the present embodiment, is led compressed air feeding by appendix 21
In pipe 2, expand rapidly at conduit 2 inner high voltage gas and mix with mud, form a kind of density slurry less than mud
Gas mixture.Under external and internal pressure difference and pressure-air synergy, the inner chamber along conduit 2 rises, and drives pipe
Interior mud and landwaste flow up, and form air, mud and the three-phase flow of landwaste mixing, constantly mend in hole
Fill compressed air, thus define flow velocity, flow great reacting cycle fluid, carry sediment and rise from the bottom of hole.
The mixed serum risen is passed through screen cloth 52 by the stock inlet 53 of slush pump 4 suction mud pit 51, mixed serum
Being filtered out by landwaste, the serosity after purification flows into the bottom of mud pit 51 through screen cloth 52, and by grout outlet
54 flow out, then are back in stake holes 3 by reflux line 55.So circulate, can will contain substantial amounts of brill
Slag is filtered out by mud, and after screening, boring mud is directly removed, and mud is by return flow line 55 circulating reflux
To stake holes 3, form mud cyclic balance state in hole.During clear hole, available crane is conduit 2
Slinging, adjustment conduit 2 bottom is to the distance at the bottom of hole, and drives conduit 2 constantly to move in stake holes 3, from
And make clear hole more thorough.
After the operation of clear hole completes, slush pump 4 mud in stake holes 3 is all discharged, then pour coagulation
Soil, pours the pile body of molding owing to not containing boring mud, thus quality is greatly enhanced.
Embodiment two,
Gas lift reverse circulation clear hole method given by the present embodiment, as it is shown on figure 3, include step:
S10, compressed air are injected
Injecting compressed air in conduit in stake holes, expands rapidly at conduit 2 inner high voltage gas and mixes with mud,
Form a kind of density slurry gas mixture less than mud.Edge under external and internal pressure difference and pressure-air synergy
The inner chamber of conduit 2 rises, and drives the interior mud of pipe and landwaste to flow up, forms air, mud and landwaste and mix
The three-phase flow closed, constantly supplements compressed air in hole, thus defines flow velocity, the great reacting cycle of flow,
Carry sediment from the mixing mud risen at the bottom of hole.
S20, extraction mud
Mud draw-out device will rise to the mixing mud suction mud purifying device of catheter tip；
S30, mud sampling Detection
The mud of mud draw-out device extraction is sampled detection, if mud particle degree is less than setting threshold values,
Then enter step S60, if mud particle degree is higher than reservation threshold, then enter step S40.Mud sampling Detection
Can fix time every one and carry out an
S40, mud purification
Mud is injected in mud pit by mud draw-out device by the stock inlet above screen cloth, and mixing is starched by screen cloth
Boring mud in liquid filters out；The slag cleaning device of mud pit, every a scheduled time, is carried out shining online boring mud
Once clear up.
S50, mud reflux
The grout outlet that mud after purification is positioned at screen bottom by mud pit flows out, and is flowed back to by return flow line
In stake holes.
Mud in S60, emptying stake holes
Air compressor machine quits work, and closes the grout outlet of mud pit, controls slush pump by complete for the mud in stake holes
In portion's suction mud pit, or it is discharged to outside mud pit.
After mud in emptying stake holes, in hole, inject concrete carry out building stake.
Gas lift reverse circulation clear hole method given by the application, by injecting compression in the continuous conductive pipe of air compressor machine
Air so that in conduit, mud forms a kind of density slurry gas mixture less than top mud, and at interior external pressure
Rise along conduit cavity under power difference and compressed air synergy, drive the interior mud of pipe and landwaste to flow up,
Form air, mud and landwaste and be mixed to form flow velocity, flow great reacting cycle fluid, thus, carry
Sediment rises from the bottom of hole, then is extracted out by mixed serum by mud draw-out device, mud purifying device filter rock
Bits, and the slurry reflux after purifying is in stake holes.This system clear hole, clear hole effect is thorough, and the used time is few, from
Improve the quality after the efficiency of stake and pile body molding are built in boring.And the method is simple to operate, equipment is easily maintained,
Reduce the cost in clear hole largely.
Above content is to combine the further description that the application is made by specific embodiment, it is impossible to recognize
Determine the application be embodied as be confined to these explanations.Ordinary skill for the application art
For personnel, on the premise of conceiving without departing from the present application, it is also possible to make some simple deductions or replace
Change.
Claims (7)
1. a gas lift reverse circulation clear hole method, it is characterised in that including:
Compressed air is injected, injecting compressed air in the conduit in stake holes, follows along pipe inner wall is counter to obtain
The mixing mud that ring rises；
Extraction mud, mud draw-out device will rise to the mixing mud suction mud purifying device of catheter tip；
Mud purification, the boring mud in mixed serum is filtered out by described mud purifying device, and will purify after
Mud is discharged；
Mud refluxes, and the mud after mud purifying device will purify passes back in stake holes.
2. the clear hole of gas lift reverse circulation as claimed in claim 1 method, it is characterised in that described compressed air
Injecting in described conduit by air compressor machine, described air compressor machine gas outlet is joined with described duct wall by appendix
Logical.
3. the clear hole of gas lift reverse circulation as claimed in claim 2 method, it is characterised in that described mud purification
Device includes the mud pit for purifying mud, is provided with the screen cloth for filtering boring mud in the middle part of described mud pit.
4. the clear hole of gas lift reverse circulation as claimed in claim 3 method, it is characterised in that described mud pit bag
Including stock inlet and grout outlet, described stock inlet is positioned at described screen cloth upper end, and described grout outlet is positioned at described screen cloth
Lower end.
5. the clear hole of gas lift reverse circulation as claimed in claim 4 method, it is characterised in that described mud purification
Step specifically includes:
Filtering slurry, is injected mud pit by mixing mud by the pulp inlet at screen cloth top,
Boring mud is removed, and removes the boring mud that screen surface leaches.
6. the clear hole of gas lift reverse circulation as claimed in claim 1 method, it is characterised in that also include mobile leading
Pipe, drives conduit to move back and forth in the horizontal direction by the catheter anchoring system of suspention conduit.
7. the clear hole of gas lift reverse circulation as claimed in claim 1 method, it is characterised in that described mud purification
Before also include,
Mud particle degree detects, and the mud extracted out in conduit is carried out sample detecting, by the mud of detection
Granularity judges that boring mud content is the most up to standard, if up to standard, stop injecting compressed air, and empties the mud in stake holes
Slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405611.3A CN105937377A (en) | 2016-06-08 | 2016-06-08 | Air lift reverse circulation borehole cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610405611.3A CN105937377A (en) | 2016-06-08 | 2016-06-08 | Air lift reverse circulation borehole cleaning method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105937377A true CN105937377A (en) | 2016-09-14 |
Family
ID=57152591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610405611.3A Pending CN105937377A (en) | 2016-06-08 | 2016-06-08 | Air lift reverse circulation borehole cleaning method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939319A (en) * | 2017-12-22 | 2018-04-20 | 中地装重庆探矿机械有限公司 | A kind of aperture midge equipment |
| CN108060893A (en) * | 2017-12-12 | 2018-05-22 | 中交公局第二工程有限公司 | A kind of gas lift reverse circulation drilling machine construction method |
| CN108951635A (en) * | 2018-08-29 | 2018-12-07 | 中国港湾工程有限责任公司 | Gas lift reverse circulation deslagging pore-forming system |
| CN109736812A (en) * | 2018-12-06 | 2019-05-10 | 中信重工机械股份有限公司 | A kind of slag tapping method during shaft excavation |
| CN109989703A (en) * | 2019-04-15 | 2019-07-09 | 中国葛洲坝集团第五工程有限公司 | A kind of novel percussion drill reacting cycle pile foundation boring device and construction method |
| CN111502538A (en) * | 2020-04-26 | 2020-08-07 | 广东省怡合建设有限公司 | Gas lift pore-forming construction method for building construction drilling |
| CN112209592A (en) * | 2020-10-19 | 2021-01-12 | 中建四局土木工程有限公司 | Novel green slurry treatment system |
| CN112209595A (en) * | 2020-10-19 | 2021-01-12 | 中建四局土木工程有限公司 | Harmless treatment process for drilling waste mud |
| CN113073638A (en) * | 2021-04-09 | 2021-07-06 | 安徽浩月建设工程有限公司 | Slag-slurry separation construction method for cast-in-situ bored pile |
| CN114705834A (en) * | 2022-03-31 | 2022-07-05 | 安徽理工大学 | Indoor test system for simulating gas lift reverse circulation slurry suspension slag discharge and test method thereof |
| CN115030675A (en) * | 2022-06-23 | 2022-09-09 | 海通建设集团有限公司 | Gas lift reverse circulation hole cleaning device and hole cleaning method |
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| CN203905869U (en) * | 2014-05-31 | 2014-10-29 | 中交一公局第三工程有限公司 | High-pressure water-flushing air-lift reverse circulation hole cleaning device |
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| CN104343114A (en) * | 2014-10-15 | 2015-02-11 | 中冶天工上海十三冶建设有限公司 | Cast-in-situ bored pile constructing method for cleaning sediment by gas lift reverse circulation method |
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| US4410041A (en) * | 1980-03-05 | 1983-10-18 | Shell Oil Company | Process for gas-lifting liquid from a well by injecting liquid into the well |
| CN102493762A (en) * | 2011-12-23 | 2012-06-13 | 上海港务工程公司 | Rectangular cast-in-place pile slotting combined drilling rig |
| CN103711119A (en) * | 2013-12-18 | 2014-04-09 | 中铁大桥局集团第四工程有限公司 | Drilled-pile mud pneumatic anti-settling circulatory system and application method thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060893A (en) * | 2017-12-12 | 2018-05-22 | 中交公局第二工程有限公司 | A kind of gas lift reverse circulation drilling machine construction method |
| CN107939319A (en) * | 2017-12-22 | 2018-04-20 | 中地装重庆探矿机械有限公司 | A kind of aperture midge equipment |
| CN108951635A (en) * | 2018-08-29 | 2018-12-07 | 中国港湾工程有限责任公司 | Gas lift reverse circulation deslagging pore-forming system |
| CN109736812A (en) * | 2018-12-06 | 2019-05-10 | 中信重工机械股份有限公司 | A kind of slag tapping method during shaft excavation |
| CN109989703A (en) * | 2019-04-15 | 2019-07-09 | 中国葛洲坝集团第五工程有限公司 | A kind of novel percussion drill reacting cycle pile foundation boring device and construction method |
| CN111502538A (en) * | 2020-04-26 | 2020-08-07 | 广东省怡合建设有限公司 | Gas lift pore-forming construction method for building construction drilling |
| CN112209592A (en) * | 2020-10-19 | 2021-01-12 | 中建四局土木工程有限公司 | Novel green slurry treatment system |
| CN112209595A (en) * | 2020-10-19 | 2021-01-12 | 中建四局土木工程有限公司 | Harmless treatment process for drilling waste mud |
| CN112209592B (en) * | 2020-10-19 | 2023-06-30 | 中建四局土木工程有限公司 | Green and environment-friendly slurry treatment system |
| CN112209595B (en) * | 2020-10-19 | 2023-12-15 | 中建四局土木工程有限公司 | Harmless treatment process for waste drilling mud |
| CN113073638A (en) * | 2021-04-09 | 2021-07-06 | 安徽浩月建设工程有限公司 | Slag-slurry separation construction method for cast-in-situ bored pile |
| CN114705834A (en) * | 2022-03-31 | 2022-07-05 | 安徽理工大学 | Indoor test system for simulating gas lift reverse circulation slurry suspension slag discharge and test method thereof |
| CN114705834B (en) * | 2022-03-31 | 2023-08-18 | 安徽理工大学 | Simulated gas lift reverse circulation slurry suspension deslagging indoor test system and test method thereof |
| CN115030675A (en) * | 2022-06-23 | 2022-09-09 | 海通建设集团有限公司 | Gas lift reverse circulation hole cleaning device and hole cleaning method |
| CN115030675B (en) * | 2022-06-23 | 2023-10-13 | 海通建设集团有限公司 | Gas lift reverse circulation hole cleaning device and hole cleaning method |
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Application publication date: 20160914 |