CN102787815A - Positive and negative circulation construction technology of ultra-deep bored piles - Google Patents
Positive and negative circulation construction technology of ultra-deep bored piles Download PDFInfo
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- CN102787815A CN102787815A CN2011101281704A CN201110128170A CN102787815A CN 102787815 A CN102787815 A CN 102787815A CN 2011101281704 A CN2011101281704 A CN 2011101281704A CN 201110128170 A CN201110128170 A CN 201110128170A CN 102787815 A CN102787815 A CN 102787815A
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Abstract
The invention relates to a positive and negative circulation construction technology of ultra-deep bored piles. The positive and negative circulation construction technology specifically comprises the following steps of: (1) carrying out site layout preparation; (2) carrying out boring of upper viscous soil layer positive circulation process; (3) carrying out boring of lower viscous soil layer positive circulation process; (4) carrying out reverse circulating cleaning after pore-forming. The invention has the beneficial effects that: the construction technology is suitable for complicated geological conditions, construction efficiency is greatly increased, and pile bore quality is effectively ensured.
Description
Technical field
The present invention relates to a kind of architectural construction technology, the positive and negative circulation of the especially a kind of extra-deep hole drilling castinplace pile construction technology that combines.
Background technology
The development of building such as super highrise building and Longspan Bridge, traffic, municipal engineering makes that the substrate load of building is increasing, and bearing capacity of foundation soil and distortion are had higher requirement; The engineering piles diameter constantly enlarges, and pile foundation is more and more darker, and the geological conditions of being faced also becomes increasingly complex; Especially soft clay area; The top and the bottom soil layer property has than big difference, and original construction technology difficulty satisfies existing construction requirement, and pore-forming efficiency is low, hole quality is undesirable.Therefore, need a kind of job practices of new extra-deep hole drilling castinplace pile, be applicable to complex geological conditions, significantly improve efficiency of construction, effectively guarantee the pile foundation hole quality.
Summary of the invention
Existing bored pile construction method is low for ultra deep pile foundation pore-forming efficiency, hole quality is undesirable in order to overcome; Can't satisfy the shortcoming of the technology that existing construction quality requires, the present invention provides the positive and negative circulation of a kind of extra-deep hole drilling castinplace pile construction technology that combines.
The technical scheme that the present invention adopts is: specifically comprise the steps:
(1) place is arranged and is prepared
Rig is in place in the construction plant, buries casing underground, and jointed rod and drill bit are arranged the mud pit that comprises circulatory pool and sedimentation basin at the scene, in mud pit, insert slush pump, at its periphery sand removing machine and gravel pump are set, and uses mutual connection of conduit to communicate;
(2) boring of top cement soil layer normal circulation technology
Rig starts, and slush pump extracts mud inflow drilling rod top in mud pit, and drill bit flows out from the bottom; Rotate drilling rod simultaneously; Drive the bit cutting soil body and creep into, mud flows in the boring, overflows from the aperture to flow in the circulatory pool; Through flowing into sedimentation basin after the desanding of gravel pump suction sand removing machine, the flow process circulation is crept into according to this again;
(3) boring of bottom chiltern soil layer reverse circular technique
The rig decompression, low speed creeps into, and the conversion bore process is used gravel pump UNICOM drilling rod instead; Drill bit extracts mud to gravel pump from the bottom, and mud is extracted out from the drilling rod top, flows into circulatory pool after the desanding of inflow sand removing machine; Rotate drilling rod simultaneously, drive the bit cutting soil body and creep into, circulatory pool mud flows into sedimentation basin; Extracted by slush pump, pour in the boring from the aperture, the flow process circulation is crept into according to this;
(4) the clear hole of anti-circulation after pore-forming is accomplished
Treat that rig is drilled into design elevation, drilling rod stops operating, and adopts the clear hole of reverse circular technique; With gravel pump UNICOM drilling rod, drill bit extracts mud from the bottom, and mud is extracted out from the drilling rod top; Flow into circulatory pool after flowing into the sand removing machine desanding, circulatory pool mud flows into sedimentation basin, is extracted by slush pump again; Pour in the boring from the aperture, sediment and mud index reach designing requirement at the bottom of the hole.
The invention has the beneficial effects as follows, be applicable to complex geological conditions, significantly improve efficiency of construction, effectively guarantee the pile foundation hole quality.
Description of drawings
Fig. 1 is that the preparation sketch map is arranged in place of the present invention;
Fig. 2 is a top of the present invention cement soil layer normal circulation technology boring sketch map;
Fig. 3 is a bottom of the present invention chiltern soil layer reverse circular technique boring sketch map;
Fig. 4 is the clear hole of an anti-circulation sketch map after pore-forming of the present invention is accomplished.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, further set forth the present invention.
By shown in Figure 1, the positive and negative circulation of a kind of extra-deep hole drilling castinplace pile construction technology that combines specifically comprises the steps:
(1) place is arranged and is prepared
Rig 1 is in place in the construction plant, buries casing 2 underground, jointed rod 3 and drill bit 4; Arrange the mud pit that comprises 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, and use mutual connection of conduit to communicate at its periphery;
(2) boring of top cement soil layer normal circulation technology
By shown in Figure 2, beginning pore-forming, top cement soil layer adopt normal circulation technology boring; Use slush pump 5 UNICOM's drilling rods 3 tops, gravel pump 7 UNICOM's circulatory pools 8, sand removing machine 6 UNICOM's sedimentation basins 9; Rig 1 starts, and slush pump 5 extracts mud inflow drilling rod 3 tops in mud pit, and drill bit 4 flows out from the bottom; Rotate drilling rod 3 simultaneously, drive the drill bit 4 cutting soil bodys and creep into, mud flows in the boring; Overflow in the inflow circulatory pool 8 from the aperture, through flowing into sedimentation basin 9 after 6 desanding of gravel pump 7 suction sand removing machines, the flow process circulation is crept into according to this again;
(3) boring of bottom chiltern soil layer reverse circular technique
By shown in Figure 3, rig 1 decompression, low speed creeps into, the conversion bore process; Use gravel pump 7 UNICOM's drilling rods 3 instead, drill bit 4 extracts mud to gravel pump 7 from the bottom, and mud is extracted out from drilling rod 3 tops, flows into circulatory pool 8 after 6 desanding of inflow sand removing machine; Rotate drilling rod 3 simultaneously, drive the drill bit 4 cutting soil bodys and creep into, circulatory pool 8 mud flow into sedimentation basin 9; Extracted by slush pump 5, pour in the boring from the aperture, the flow process circulation is crept into according to this;
(4) the clear hole of anti-circulation after pore-forming is accomplished
By shown in Figure 3, treat that rig 1 is drilled into design elevation, drilling rod 3 stops operating, and adopts the clear hole of reverse circular technique; With gravel pump 7 UNICOM's drilling rods 3, drill bit 4 extracts mud from the bottom, and mud is extracted out from drilling rod 3 tops; Flow into circulatory pool 8 after flowing into sand removing machine 6 desanding, circulatory pool mud 8 flows into sedimentation basin 9, is extracted by slush pump 5 again; Pour in the boring from the aperture, mud circulation is flowed, sediment and mud index reach designing requirement at the bottom of the hole.
Claims (1)
1. the positive and negative circulation of extra-deep hole drilling castinplace pile construction technology that combines is characterized in that, specifically comprises the steps:
(1) place is arranged and is prepared
Rig in the construction plant (1) is in place; Bury casing (2) underground; Jointed rod (3) and drill bit (4) are arranged the mud pit that comprises circulatory pool (8) and sedimentation basin (9) at the scene, in mud pit, insert slush pump (5); At its periphery sand removing machine (6) and gravel pump (7) are set, and use mutual connection of conduit to communicate;
(2) boring of top cement soil layer normal circulation technology
Rig (1) starts, and slush pump (5) extracts mud inflow drilling rod (3) top in mud pit, and the drill bit from the bottom (4) flows out; Rotate drilling rod (3) simultaneously; Drive drill bit (4) the cutting soil body and creep into, mud flows in the boring, overflows from the aperture to flow in the circulatory pool (8); Flow into sedimentation basin (9) after passing through gravel pump (7) suction sand removing machine (6) desanding again, the flow process circulation is crept into according to this;
(3) boring of bottom chiltern soil layer reverse circular technique
Rig (1) decompression, low speed creeps into, and the conversion bore process is used gravel pump (7) UNICOM's drilling rod (3) instead; Drill bit (4) extracts mud to gravel pump (7) from the bottom, and mud is extracted out from drilling rod (3) top, flows into circulatory pool (8) after the desanding of inflow sand removing machine (6); Rotate drilling rod (3) simultaneously, drive drill bit (4) the cutting soil body and creep into, circulatory pool (8) mud flows into sedimentation basin (9); Extracted by slush pump (5), pour in the boring from the aperture, the flow process circulation is crept into according to this;
(4) the clear hole of anti-circulation after pore-forming is accomplished
Treat that rig (1) is drilled into design elevation, drilling rod (3) stops operating, and adopts the clear hole of reverse circular technique; With gravel pump (7) UNICOM's drilling rod (3), the drill bit from the bottom (4) extracts mud, and 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), is extracted by slush pump (5) again; Pour in the boring from the aperture, sediment and mud index reach designing requirement at the bottom of the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| 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 |
Publications (2)
| Publication Number | Publication Date |
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| CN102787815A true CN102787815A (en) | 2012-11-21 |
| CN102787815B CN102787815B (en) | 2015-08-05 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895488A (en) * | 2015-04-30 | 2015-09-09 | 许振江 | Rapid emptying well drill |
| CN105735923A (en) * | 2016-03-24 | 2016-07-06 | 上海市机械施工集团有限公司 | Slurry circulation treatment system |
| CN107575249A (en) * | 2017-10-31 | 2018-01-12 | 河南理工大学 | A kind of high-pressure slurry wall protecting method and device |
| CN108590511A (en) * | 2018-04-04 | 2018-09-28 | 中交第三公路工程局有限公司 | A kind of sand-pebble layer drilling new process and equipment |
| CN112196493A (en) * | 2020-09-14 | 2021-01-08 | 中国电建市政建设集团有限公司 | Improved well completion process method suitable for water-saturated thick-layer fine sand layer |
| 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 |
| CN113914308A (en) * | 2021-09-28 | 2022-01-11 | 深圳市桥梁维修设备科技有限公司 | Construction method combining forward circulation and reverse circulation of cast-in-situ bored pile |
| CN114837158A (en) * | 2021-02-02 | 2022-08-02 | 杨玉凤 | Deep-water static sounding deep hole penetration device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895488A (en) * | 2015-04-30 | 2015-09-09 | 许振江 | Rapid emptying well drill |
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| CN105735923A (en) * | 2016-03-24 | 2016-07-06 | 上海市机械施工集团有限公司 | Slurry circulation treatment system |
| 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 |
| CN107575249A (en) * | 2017-10-31 | 2018-01-12 | 河南理工大学 | A kind of high-pressure slurry wall protecting method and device |
| CN108590511A (en) * | 2018-04-04 | 2018-09-28 | 中交第三公路工程局有限公司 | A kind of sand-pebble layer drilling new process and equipment |
| CN112196493A (en) * | 2020-09-14 | 2021-01-08 | 中国电建市政建设集团有限公司 | Improved well completion process method suitable for water-saturated thick-layer fine sand layer |
| CN114837158A (en) * | 2021-02-02 | 2022-08-02 | 杨玉凤 | Deep-water static sounding deep hole penetration device |
| 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 |
| CN113914308A (en) * | 2021-09-28 | 2022-01-11 | 深圳市桥梁维修设备科技有限公司 | Construction method combining forward circulation and reverse circulation of cast-in-situ bored 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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| CN102787815B (en) | 2015-08-05 |
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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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