CN102373703A - Centrifugal sand remover for bridge pile foundation construction and application method thereof - Google Patents
Centrifugal sand remover for bridge pile foundation construction and application method thereof Download PDFInfo
- Publication number
- CN102373703A CN102373703A CN201110377681XA CN201110377681A CN102373703A CN 102373703 A CN102373703 A CN 102373703A CN 201110377681X A CN201110377681X A CN 201110377681XA CN 201110377681 A CN201110377681 A CN 201110377681A CN 102373703 A CN102373703 A CN 102373703A
- Authority
- CN
- China
- Prior art keywords
- mud
- pile foundation
- sand
- slurry
- hole
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a centrifugal sand remover for bridge pile foundation construction and an application method thereof. The invention adopts the scheme that a sand collection drum and a mud and sand separating drum are arranged on fixed support legs; a slurry outlet interface is arranged at the upper end of the mud and sand separating drum; a slurry inlet interface is arranged at one side of the lower part of the mud and sand separating drum; a sand discharging port is arranged in the center at the lower part of the mud and sand separating drum; the slurry inlet interface is communicated with a sewage pump of a slurry pond; the slurry outlet interface is communicated with a pile foundation hole; the sewage pump is opened and slurry is pumped into the mud and sand separating drum; the slurry with the pressure rotates to separate out sand grains with great specific gravity; the sand grains are discharged out from the sand discharging port; and the slurry with small specific gravity is injected into the pile foundation hole from the slurry outlet interface, then flows into a settling pond and the slurry pond and is pumped into the mud and sand separating drum through the sewage pump, and thus the effect for cleaning holes by using repeated circulation is achieved. According to the centrifugal sand remover for the bridge pile foundation construction and the application method thereof disclosed by the invention, the consumption of clear water injected into the slurry pond and the slurry amount required to be outwards freighted are reduced; the construction speed of the bridge pile foundation is effectively increased; the slurry generated during pile foundation construction is reduced; the pollution to the environment caused by outwards-freighted slurry is reduced; the time of slurry circulation is shortened; the construction progress is accelerated; and the cost is reduced.
Description
Technical field
The present invention relates to a kind of bridge pile foundation construction equipment, specifically is a kind of bridge pile foundation construction desander and application process thereof, belongs to the bridge construction mechanical field.
Background technology
In the large bridge pile foundation construction, according to the different geological situation can select percussive drill, rotary rig for use, different rig such as the rig that circles round.Percussive drill is applicable to the pile foundation construction of competent beds such as sandstone, conglomerate, marl and various complicated geologicals; Rotary rig divides circulation drill and clean-out machine by the endless form of mud, and circulation drill is applicable to all kinds of soil layers such as clay, silt, sandy soil; Clean-out machine is applicable to clay, silt, sandy soil and weathered rock formation; When boring reaches certain depth, need hole depth pore position and hole shape to be checked inspection method can adopt cage controller or ultrasound examination, after confirming to meet design requirement, can carry out hole and fluid concrete clearly.The method in clear hole is taken out the slag method, inhales the mud method and is changed the slurry method.Following standard must be satisfied in clear hole: the mud of discharging in the hole or extracting out does not have the particle of 2-3mm; Mud balance is not more than 1.1; Sand factor is less than 2%; Viscosity 17-20s; Allow sediment thickness to be not more than 10cm before the cast underwater concrete, friction pile is not more than 30cm, otherwise must carry out the clear hole of secondary.Though the method in clear hole is simple, reach relatively difficulty of above several standard-requireds, the convenient the most frequently used method of clear at the construction field (site) Kongzui is to change the slurry method, change the slurry method and be divided into direct circulation and two kinds of anti-circulations.Anti-circulation is under the effect of atmospheric pressure, and mud flows to shaft bottom through the backwater ditch along the annular gap of wellhole by sedimentation basin, and this moment, rotating disk drove drilling rod; Drive the drill bit rotation and creep into, the negative pressure of being set up by the foul water pump suction sucks the drilling rod inner chamber to chip mud, rises to water tap subsequently; Enter sedimentation basin through foul water pump; The mud of post precipitation continues to flow into wellhole, so goes round and begins again, and has formed the reverse circulating work of creeping into.Direct circulation is in the hole, to inject the mud dilution that hole internal ratio anharmonic ratio is bigger of the lower mud of proportion from mud pit, and the mud of dilution inflow mud pit precipitates then, and circulation finally reaches the standard-required in hole clearly so repeatedly.The conventional clear hole of direct circulation reaches standard-required generally needs 7-10 hour; The clear hole time so not only influences the normal completion of duration; And to consume a large amount of electric power energies in cyclic process; Cyclic process will constantly be injected clear water and produce a large amount of mud to mud pit, and the mud of outward transport pollutes the environment around the waste field.Also there is not effective method to change this present situation at present.
Summary of the invention
The objective of the invention is to shorten the clear hole time of bridge pile foundation construction and reduce the outer freight volume of mud; And guarantee that clear hole index satisfies the technical design requirement; Under the engineering rock stratum distributes thicker situation, reduce the sand content in the mud fast, and disclose a kind of bridge pile foundation construct centrifugal desander and application process thereof.
Technical scheme of the present invention is following:
The fixed set sand tube on fixed supporting leg top is connected the silt particle cylinder with collection sand tube, and silt particle cylinder upper end is provided with the pulp interface, and silt particle cylinder bottom one side is provided with into slurry interface, is provided with sand removing hole in collection sand tube lower central;
Application process of the present invention is following:
Behind the pile foundation pore-forming, the interface that advances to starch of centrifugal desander is connected with the foul water pump of mud pit, the pulp interface is connected with conduit in the pile foundation hole; Open foul water pump then, mud is in foul water pump suction silt particle cylinder, and the mud that has certain pressure forms in the silt particle cylinder and rotatablely moves; Isolating heavy sand grains through rotation discharges from sand removing hole; The little mud of proportion in conduit injects the pile foundation hole, flow into sedimentation basin with mud in the pile foundation hole after fully mixing from grout outlet, flow into mud pit through the sedimentation basin post precipitation; In foul water pump suction silt particle cylinder, circulation reaches hole effect clearly so repeatedly again.
The operating principle of desander: centrifugal desander is to process according to the screening principle of the solid particle in the fluid when rotation is flowed; When mixing mud advances to starch in the housing that the interface tangential gets into desander from centrifugal desander under the certain pressure again; Produce strong rotatablely moving; Because mud is different with the density of sand grains; Under the acting in conjunction of centrifugal force, centripetal force, liquid drag force and gravity; The lower mud of density is discharged from grout outlet, and the sand grains that density is bigger is then discharged at sand draining port, so the mud in the centrifugal desander injection of the process pile foundation hole is than directly being much smaller by the mud sand factor in the foul water pump injection hole; So just effectively controlled the sand factor the mud, that is to say with the clear pile foundation of the littler mud circulation of sand factor hole than with high many of the clear pile foundation of the big mud circulation of sand factor hole efficient from the source of mud circulation.
In mud pit, constantly inject clear water at the construction field (site); Simultaneously the mud in the sedimentation basin is in time transported outward; Could improve the efficient in the clear pile foundation of circulation hole like this, the time that clear pile foundation hole reaches standard-required is more than 8 hours, and needing the mud amount of outward transport is more than 5 times of concrete perfusion volume.After having used centrifugal desander, reduced the clear water consumption that injects to mud pit, need the mud amount of outward transport to reduce thereupon, reach clearly that pile foundation hole standard-required needed below 3 hours, needing the mud amount of outward transport is below 3 times of concrete perfusion volume.Effectively accelerated the speed of application of bridge pile foundation, reduced the mud that in pile foundation construction, produces, reduced of the pollution of outward transport mud, shortened the time of mud circulation, accelerated construction speed, reduced cost environment.
Description of drawings
Accompanying drawing 1 is a main TV structure sketch map of the present invention.
Accompanying drawing 2 is the structure enlarged diagram of accompanying drawing 1A-A of the present invention to the cross section.
Accompanying drawing 3 is a technique for applying FB(flow block) of the present invention.
Description of reference numerals is following:
Fixed supporting leg 1, collection sand tube 2, silt particle cylinder 3, advance to starch interface 4, pulp interface 5, sand removing hole 6, sediment outflow valve 7.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:
At fixed supporting leg (1) top fixed set sand tube (2), be connected silt particle cylinder (3) with collection sand tube (2), silt particle cylinder (3) upper end is provided with pulp interface (4); Silt particle cylinder (3) bottom one side is provided with into slurry interface (5); Be provided with sand removing hole (6) in collection sand tube (2) lower central, it is characterized in that at three fixed supporting legs (1) top fixed set sand tubes (2) collection sand tube (2) is a cone; Silt particle cylinder (3) is a cylinder, and sand removing hole (6) lower end is provided with sediment outflow valve (7).
The application process of the centrifugal desander of the present invention is following:
After the pile foundation hole forms; The interface (4) that advances to starch of centrifugal desander is connected with the foul water pump of mud pit, and pulp interface (5) is connected with conduit in the pile foundation hole, opens foul water pump then; Mud is in foul water pump tangential suction silt particle cylinder (3); The mud that has certain pressure forms in silt particle cylinder (3) and rotatablely moves, isolates heavy sand grains through rotation and discharges from sand removing hole (6), the little mud of proportion from pulp interface (5) in conduit injects the pile foundation hole; Flow into sedimentation basin with mud in the pile foundation hole after fully mixing; Flow into mud pit through the sedimentation basin post precipitation, in foul water pump suction silt particle cylinder (3), circulation reaches hole purpose clearly so repeatedly again.
Claims (4)
1. the bridge pile foundation centrifugal desander of constructing; It is characterized in that technical scheme is following: at fixed supporting leg (1) top fixed set sand tube (2); Be connected silt particle cylinder (3) with collection sand tube (2); Silt particle cylinder (3) upper end is provided with pulp interface (4), and silt particle cylinder (3) bottom one side is provided with into slurry interface (5), is provided with sand removing hole (6) in collection sand tube (2) lower central;
The construct application process of centrifugal desander of bridge pile foundation of the present invention is following:
Behind the pile foundation pore-forming, the interface (4) that advances to starch of centrifugal desander is connected with the foul water pump of mud pit, pulp interface (5) is connected with conduit in the stake of hole; Open foul water pump then, mud is in foul water pump suction silt particle cylinder (3), and the mud that has certain pressure forms in silt particle separator box (3) and rotatablely moves; After rotation separated, heavy sand grains was discharged from sand removing hole (6) in rotation, the little mud of proportion from grout outlet in conduit injects the pile foundation hole; Flow into sedimentation basin with mud in the pile foundation hole after fully mixing; Flow into mud pit through the sedimentation basin post precipitation, in the centrifugal desander of foul water pump suction, circulation reaches hole effect clearly so repeatedly again.
2. the bridge pile foundation according to claim 1 centrifugal desander of constructing is characterized in that at three fixed supporting legs (1) top fixed set sand tubes (2), and collection sand tube (2) is a cone, and silt particle cylinder (3) is a cylinder.
3. the bridge pile foundation according to claim 1 centrifugal desander of constructing is characterized in that sand removing hole (6) lower end is provided with sediment outflow valve (7).
4. the bridge pile foundation according to claim 1 centrifugal desander application process of constructing is characterized in that opening foul water pump, and mud is in foul water pump tangential suction silt particle cylinder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110377681XA CN102373703A (en) | 2011-11-24 | 2011-11-24 | Centrifugal sand remover for bridge pile foundation construction and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110377681XA CN102373703A (en) | 2011-11-24 | 2011-11-24 | Centrifugal sand remover for bridge pile foundation construction and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102373703A true CN102373703A (en) | 2012-03-14 |
Family
ID=45792879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110377681XA Pending CN102373703A (en) | 2011-11-24 | 2011-11-24 | Centrifugal sand remover for bridge pile foundation construction and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102373703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498936A (en) * | 2016-12-09 | 2017-03-15 | 中铁六局集团广州工程有限公司 | A kind of cast-in-situ bored pile mud desanding system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249763Y (en) * | 1995-07-19 | 1997-03-19 | 李风宁 | Sand removing conic body of pulping and sand moving machine |
| CN1332309A (en) * | 2001-08-03 | 2002-01-23 | 宁晋生 | Directly sucking and reversely circular bottom slag-removing method and equipment before filling concrete for drilling cast-in-situ pile |
| CN201208531Y (en) * | 2008-03-05 | 2009-03-18 | 李彦光 | Mud desander |
| CN101956412A (en) * | 2009-07-21 | 2011-01-26 | 中交上海航道勘察设计研究院有限公司 | Mud and sand separating method used in suction dredger |
-
2011
- 2011-11-24 CN CN201110377681XA patent/CN102373703A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249763Y (en) * | 1995-07-19 | 1997-03-19 | 李风宁 | Sand removing conic body of pulping and sand moving machine |
| CN1332309A (en) * | 2001-08-03 | 2002-01-23 | 宁晋生 | Directly sucking and reversely circular bottom slag-removing method and equipment before filling concrete for drilling cast-in-situ pile |
| CN201208531Y (en) * | 2008-03-05 | 2009-03-18 | 李彦光 | Mud desander |
| CN101956412A (en) * | 2009-07-21 | 2011-01-26 | 中交上海航道勘察设计研究院有限公司 | Mud and sand separating method used in suction dredger |
Non-Patent Citations (1)
| Title |
|---|
| 李斌等: "崖门大桥桩基施工泥浆处理系统", 《国外桥梁》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498936A (en) * | 2016-12-09 | 2017-03-15 | 中铁六局集团广州工程有限公司 | A kind of cast-in-situ bored pile mud desanding system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203655190U (en) | Hole cleaning equipment for cast-in-place bored pile | |
| CN102704873B (en) | Construction equipment of hole drilling/punching cast-in-place pile with self-provided mud pit and mud separating device | |
| CN104631439B (en) | A kind of Pump breath countercirculate pile foundation construction device and method | |
| CN105804059B (en) | Drilling pouring pile hole device and method | |
| CN201208531Y (en) | Mud desander | |
| CN105937377A (en) | Air lift reverse circulation borehole cleaning method | |
| CN109759225B (en) | Construction structure is handled in bored concrete pile mud circulation that punches a hole | |
| CN206458369U (en) | It is a kind of to be used for the borehole cleaning system that stake is built in drilling | |
| CN105178289A (en) | Prefabricated downcast pipe pile in building foundation pit and use method thereof | |
| CN102787815A (en) | Positive and negative circulation construction technology of ultra-deep bored piles | |
| CN103603339A (en) | Method for long spiral drilling machine grouting retaining wall hole forming and system thereof | |
| CN108104749A (en) | Sandstone geothermal well gas lift reverse circulation sand-flushing Processes and apparatus | |
| CN216110607U (en) | A mud recovery processing device for positive and negative circulation rig | |
| CN203603145U (en) | Long spiral drilling machine grouting retaining wall hole forming system | |
| CN111456055A (en) | Foundation pit dewatering construction method | |
| CN104141300A (en) | Foundation pile hole drilling construction process | |
| CN113638706A (en) | Pile-forming construction equipment for large-diameter rock-socketed cast-in-place pile with super-thick covering layer | |
| CN205714046U (en) | Mud does not land intelligent environment protection integration well drilling solid control system | |
| CN202359549U (en) | Centrifugal sand remover for bridge pile foundation construction | |
| CN203145866U (en) | Secondary hole cleaning equipment for cast-in-place piles | |
| CN112196493A (en) | Improved well completion process method suitable for water-saturated thick-layer fine sand layer | |
| CN202249851U (en) | Reverse circulation hole forming equipment for cast-in-place pile | |
| CN102373703A (en) | Centrifugal sand remover for bridge pile foundation construction and application method thereof | |
| CN111691409A (en) | Slurry dado construction method | |
| CN206438508U (en) | Split type quick hole cleaning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120314 |