CN102787815B - The positive and negative circulation of extra-deep hole drilling castinplace pile combines construction technology - Google Patents
The positive and negative circulation of extra-deep hole drilling castinplace pile combines construction technology Download PDFInfo
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- CN102787815B CN102787815B CN201110128170.4A CN201110128170A CN102787815B CN 102787815 B CN102787815 B CN 102787815B CN 201110128170 A CN201110128170 A CN 201110128170A CN 102787815 B CN102787815 B CN 102787815B
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Abstract
The present invention relates to the positive and negative circulation of a kind of extra-deep hole drilling castinplace pile to combine construction technology, specifically comprise the steps: that (one) Ground arrangement prepares; (2) boring of top cement soil layer normal circulation technology; (3) boring of bottom chiltern soil layer reverse circular technique; (4) pore-forming reverse circulating clear hole after completing; The invention has the beneficial effects as follows, be applicable to complicated geological conditions, significantly improve efficiency of construction, effectively guarantee pile foundation hole quality.
Description
Technical field
The present invention relates to a kind of architectural construction technology, the positive and negative circulation of especially a kind of extra-deep hole drilling castinplace pile combines construction technology.
Background technology
The development of the building such as super highrise building and Longspan Bridge, traffic, municipal engineering, make the substrate load of building increasing, ground bearing capacity is had higher requirement, engineering pile diameter constantly expands, and pile foundation is more and more darker, faced by geological conditions also become increasingly complex, especially soft clay area, top and the bottom soil layer property has bigger difference, and original construction technology is more difficult meets existing construction requirement, and pore-forming efficiency is low, hole quality is undesirable.Therefore, need a kind of construction method of new extra-deep hole drilling castinplace pile, be applicable to complicated geological conditions, significantly improve efficiency of construction, effectively guarantee pile foundation hole quality.
Summary of the invention
In order to overcome, existing bored pile construction method is low for ultra-deep pile foundation pore-forming efficiency, hole quality is undesirable, the shortcoming of technology that existing construction quality requires cannot be met, the invention provides the positive and negative circulation of a kind of extra-deep hole drilling castinplace pile and to combine construction technology.
The technical solution used in the present invention is: specifically comprise the steps:
(1) Ground arrangement prepares
Driller insertion in construction plant, buries casing underground, jointed rod and drill bit, arranges at the scene and comprises the mud pit of circulatory pool and sedimentation basin, insert slush pump, arrange sand removing machine and gravel pump at its periphery in mud pit, and uses conduit to be connected to each other to communicate;
(2) boring of top cement soil layer normal circulation technology
Rig starts, slush pump extracts mud and flows into drilling rod top in mud pit, flow out from bottom drill bit, rotate drilling rod simultaneously, drive the bit cutting soil body to creep into, mud flows in boring, overflows flow in circulatory pool from aperture, after the desanding of gravel pump suction sand removing machine, flow into sedimentation basin again, flow cycles creeps into according to this;
(3) boring of bottom chiltern soil layer reverse circular technique
Rig reduces pressure, and low speed creeps into, conversion bore process, use gravel pump UNICOM drilling rod instead, gravel pump extracts mud from bottom drill bit, and mud is extracted out from drilling rod top, flows into circulatory pool after flowing into sand removing machine desanding, rotate drilling rod simultaneously, drive the bit cutting soil body to creep into, circulatory pool mud flows into sedimentation basin, then is extracted by slush pump, pour into from aperture in boring, flow cycles creeps into according to this;
(4) pore-forming complete after the clear hole of reacting cycle
Machine drill to be drilled is to design elevation, drilling rod stops operating, adopt the clear hole of reverse circular technique, with gravel pump UNICOM drilling rod, extract mud from bottom drill bit, mud is extracted out from drilling rod top, flow into circulatory pool after flowing into sand removing machine desanding, circulatory pool mud flows into sedimentation basin, then is extracted by slush pump, pour in boring from aperture, until sediment at the bottom of hole and mud index reach designing requirement.
The invention has the beneficial effects as follows, be applicable to complicated geological conditions, significantly improve efficiency of construction, effectively guarantee pile foundation hole quality.
Accompanying drawing explanation
Fig. 1 is that Ground arrangement of the present invention prepares schematic diagram;
Fig. 2 is top of the present invention cement soil layer normal circulation technology boring schematic diagram;
Fig. 3 is bottom of the present invention chiltern soil layer reverse circular technique boring schematic diagram;
Fig. 4 is reacting cycle clear hole schematic diagram after pore-forming of the present invention completes.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, set forth the present invention further.
As shown in Figure 1, the positive and negative circulation of a kind of extra-deep hole drilling castinplace pile combines construction technology, specifically comprises the steps:
(1) Ground arrangement prepares
In construction plant, rig 1 is in place, buries casing 2 underground, jointed rod 3 and drill bit 4, arrange the mud pit comprising circulatory pool 8 and sedimentation basin 9 at the scene, in mud pit, insert slush pump 5, sand removing machine 6 and gravel pump 7 are set at its periphery, and use conduit to be connected to each other to communicate;
(2) boring of top cement soil layer normal circulation technology
As shown in Figure 2, start pore-forming, top cement soil layer adopts normal circulation technology boring, use slush pump 5 UNICOM drilling rod 3 top, gravel pump 7 UNICOM circulatory pool 8, sand removing machine 6 UNICOM sedimentation basin 9, rig 1 starts, and slush pump 5 extracts mud and flows into drilling rod 3 top in mud pit, flows out from bottom drill bit 4, rotate drilling rod 3 simultaneously, drive drill bit 4 to cut the soil body to creep into, mud flows in boring, overflows flow in circulatory pool 8 from aperture, after the desanding of gravel pump 7 suction sand removing machine 6, flow into sedimentation basin 9 again, flow cycles creeps into according to this;
(3) boring of bottom chiltern soil layer reverse circular technique
As shown in Figure 3, rig 1 reduces pressure, and low speed creeps into, conversion bore process, use gravel pump 7 UNICOM drilling rod 3 instead, gravel pump 7 extracts mud from bottom drill bit 4, mud is extracted out from drilling rod 3 top, flow into circulatory pool 8 after flowing into sand removing machine 6 desanding, rotate drilling rod 3 simultaneously, drive drill bit 4 to cut the soil body and creep into, circulatory pool 8 mud flows into sedimentation basin 9, extracted by slush pump 5, pour into from aperture in boring, flow cycles creeps into according to this again;
(4) pore-forming complete after the clear hole of reacting cycle
As shown in Figure 3, treat that rig 1 is drilled into design elevation, drilling rod 3 stops operating, adopt the clear hole of reverse circular technique, with gravel pump 7 UNICOM drilling rod 3, extract mud from bottom drill bit 4, mud is extracted out from drilling rod 3 top, circulatory pool 8 is flowed into after flowing into sand removing machine 6 desanding, circulatory pool mud 8 flows into sedimentation basin 9, then is extracted by slush pump 5, pours in boring from aperture, mud circulation is flowed, until sediment at the bottom of hole and mud index reach designing requirement.
Claims (1)
1. the positive and negative circulation of extra-deep hole drilling castinplace pile combines a construction technology, it is characterized in that, specifically comprises the steps:
(1) Ground arrangement prepares
In construction plant, rig (1) is in place, bury casing (2) underground, jointed rod (3) and drill bit (4), arrange the mud pit comprising circulatory pool (8) and sedimentation basin (9) at the scene, slush pump (5) is inserted in mud pit, sand removing machine (6) and gravel pump (7) are set at mud pit periphery, and use conduit to be connected to each other to communicate;
(2) boring of top cement soil layer normal circulation technology
Rig (1) starts, slush pump (5) extracts mud and flows into drilling rod (3) top in mud pit, flow out from bottom drill bit (4), rotate drilling rod (3) simultaneously, drive drill bit (4) to cut the soil body to creep into, mud flows in boring, overflows flow in circulatory pool (8) from aperture, after gravel pump (7) suction sand removing machine (6) desanding, flow into sedimentation basin (9) again, flow cycles creeps into according to this;
(3) boring of bottom chiltern soil layer reverse circular technique
Rig (1) reduces pressure, and low speed creeps into, conversion bore process, use gravel pump (7) UNICOM drilling rod (3) instead, gravel pump (7) extracts mud from bottom drill bit (4), and mud is extracted out from drilling rod (3) top, flows into circulatory pool (8) after flowing into sand removing machine (6) desanding, rotate drilling rod (3) simultaneously, drive drill bit (4) to cut the soil body to creep into, circulatory pool (8) mud flows into sedimentation basin (9), then is extracted by slush pump (5), pour into from aperture in boring, flow cycles creeps into according to this;
(4) pore-forming complete after the clear hole of reacting cycle
Treat that rig (1) is drilled into design elevation, drilling rod (3) stops operating, adopt the clear hole of reverse circular technique, with gravel pump (7) UNICOM drilling rod (3), extract mud from drill bit (4), mud is extracted out from drilling rod (3) top, flow into circulatory pool (8) after flowing into sand removing machine (6) desanding, circulatory pool mud (8) flows into sedimentation basin (9), then is extracted by slush pump (5), pour in boring from aperture, until sediment at the bottom of hole and mud index reach designing requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110128170.4A CN102787815B (en) | 2011-05-18 | 2011-05-18 | The positive and negative circulation of extra-deep hole drilling castinplace pile combines construction technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110128170.4A CN102787815B (en) | 2011-05-18 | 2011-05-18 | The positive and negative circulation of extra-deep hole drilling castinplace pile combines construction technology |
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| CN102787815A CN102787815A (en) | 2012-11-21 |
| CN102787815B true CN102787815B (en) | 2015-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560950A (en) * | 2020-04-20 | 2020-08-21 | 中铁十二局集团有限公司 | Pile hole forming method for cast-in-place pile |
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| CN105735923B (en) * | 2016-03-24 | 2019-04-19 | 上海市机械施工集团有限公司 | A kind of mud circulating treating system |
| CN107575249B (en) * | 2017-10-31 | 2020-02-14 | 河南理工大学 | High-pressure slurry wall protection method and device |
| CN108590511B (en) * | 2018-04-04 | 2020-02-14 | 中交第三公路工程局有限公司 | New technology and equipment for drilling in sandy cobble stratum |
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| CN113585992A (en) * | 2021-07-22 | 2021-11-02 | 深圳市工勘岩土集团有限公司 | Pump suction reverse circulation drilling structure of super-thick covering layer large-diameter rock-socketed cast-in-place pile |
| CN113914308B (en) * | 2021-09-28 | 2023-05-26 | 深圳市桥梁维修设备科技有限公司 | Construction method combining forward circulation and reverse circulation of bored pile |
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| CN102787815A (en) | 2012-11-21 |
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Address after: 200433 Yangpu District, Shanghai Star Road, No. 231 Applicant after: Shanghai Foundation Engineering Group Co., Ltd. Address before: 200433 Yangpu District, Shanghai Star Road, No. 231 Applicant before: Shanghai Foundation Engineering Co., Ltd. |
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