CN101109179A - Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile - Google Patents
Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile Download PDFInfo
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- CN101109179A CN101109179A CNA2007100621929A CN200710062192A CN101109179A CN 101109179 A CN101109179 A CN 101109179A CN A2007100621929 A CNA2007100621929 A CN A2007100621929A CN 200710062192 A CN200710062192 A CN 200710062192A CN 101109179 A CN101109179 A CN 101109179A
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Abstract
The invention discloses a construction method using gas-lift back-circulation hole cleaning for cast piles by drilling in slurry dado, which comprises the following procedures: (1) setting steel guide tube in the rebar cage depending upon the diameter of the pile; (2) installing special guide-pipe epimerite with an inserting port for hi-pressure rubber tube at top of the steel tube; (3) measuring the specific weight of the slurry in the hole, determining the length of the hi-pressure rubber tube to be inserted into the steel guide tube depending upon the specific weight of the slurry; (4) inserting into the steel guide tube the hi-pressure rubber tube having capillary holes at its bottom; (5) connecting the hi-pressure rubber tube with an air compressor; (6) turning on the air compressor to clear out dregs by gas-lift back circulation. The invention is furnished with rapid dreg-clearing speed, clean and through dreg clearing; comparing with prior process, the invention can improve 3-5 times dreg-clearing speed; the invention guarantees the quality of pipe foundation, is free from slurry pollution and good for environmental protection; and can save water and land. The hole-clearing device and equipment used are easy to install and operate, are practical, the materials are readily available, the price is low and the process is convenient.
Description
Technical field
The present invention relates to a kind of job practices of building foundation, particularly a kind of holing with slurry wall protection castinplace pile utilizes the job practices in the clear hole of the anti-circulation of gaslift, belongs to sediment technology at the bottom of the engineering construction field pile foundation construction cleaning hole.
Background technology
Pile foundation is a building field base form commonly used, and bored pile has occupied leading position with its unique advantage in pile foundation is used.But no matter design a type is friction pile or end bearing pile, and sediment thickness requires all compare strictness at the bottom of its hole before to concrete spouting, because the thickness of sediment directly affects the size of pile capacity at the bottom of the hole.In the engineering practice, the pile foundation accident that causes owing to sediment at the bottom of the hole is blocked up has been no lack of example.Therefore, a most important procedure is exactly a sediment at the bottom of the cleaning hole how in the holing with slurry wall protection filling pile construction, promptly clear hole.Traditional clear hole method is to utilize conduit to insert slush pump before concrete spouting, utilizes direct circulation or the anti-clear hole of circulating, and then utilization is drawn the mud bucket and drawn the clear hole of slag sometimes.There is following shortcoming in these clear hole technology: 1, the hole effect is undesirable clearly, influences the performance of pile capacity.Utilize slush pump just the clear hole of (instead) circulation be by mud circulation with the hole at the bottom of sediment take out of, it is subjected to slush pump Effect on Performance maximum, particularly direct circulation, the stake hole depth is dark more, big more clear hole, stake footpath effect is undesirable more; 2, the clear hole time is longer.3, need use the mud of amplification quantity side by side, cause environment pollution and wasted water resource and land resources.In view of the defective that above-mentioned clear hole technology exists, domestic and international many scholars remove the method for sediment at the bottom of being devoted to study and explore a kind of comparatively ideal hole.
Summary of the invention
The objective of the invention is defective at existing clinker removal method existence, provide a kind of holing with slurry wall protection castinplace pile to utilize the job practices in the clear hole of the anti-circulation of gaslift, because sediment can not be removed totally, influence the performance of end resistance and the bearing capacity reduction problem that makes to solve.
Design of the present invention is such: utilize air compressor machine that gas is sent in the conduit by the tracheae that is placed in the conduit, gas and mud are mixed, form the slurry gas mixture, because of its density original mud in the hole, produce difference in specific gravity, form buoyancy, make mud flow out conduit, sediment at the bottom of the hole is taken in the formation circulation out of, thereby reaches the purpose at the bottom of the cleaning eye.
Particularly, method of the present invention may further comprise the steps:
(1) in reinforcing cage, divides into conduit according to stake footpath size;
(2) at the top of conduit a special conduit epimerite that has sebific duct to insert mouth is installed;
(3) mud balance in the measured hole determines that according to mud balance sebific duct inserts the degree of depth in the conduit;
(4) in conduit, insert the high-pressure rubber pipe that the bottom has pore;
(5) high-pressure rubber pipe is connected with air compressor machine;
(6) send into gases at high pressure in the unlatching air compressor machine conductive pipe, carry out the clear hole of the anti-circulation of gaslift.
Job practices of the present invention comprises following technical essential:
A, lay the steel conduit
Concrete perfusion is generally used steel conduit, and the conduit among the present invention also is a steel conduit, and its internal diameter is controlled to be 200~350mm, decides on stake footpath size.Steel conduit is made up of some merogenesis, divides internode to adopt and is threaded, about the long 3m of a joint.Mouth 30~50cm at the bottom of the hole at the bottom of the steel conduit in the following hand-hole.
B, making and installation conduit epimerite
Conduit is divided into the back that finishes special conduit epimerite is installed, about conduit epimerite length 1.0m, become the elbow-shaped formula, the elbow top has the osculum of a diameter 5cm, is that high-pressure rubber pipe inserts mouth, conduit epimerite one end and conduit screwed connection, other end outlet downwards, be grout outlet, the exit is provided with the filter residue screen cloth, is used to filter sediment.
C, by inserting the high-pressure rubber pipe supply gas in the conduit epimerite conductive pipe
The high-pressure rubber pipe that the bottom is had a pore inserts in the steel conduit from the top open part of conduit epimerite, generally speaking, the insertion depth of high-pressure rubber pipe be in the hole steel conduit length 1/2~2/3.This degree of depth is by the slurry specific gravity in hole decision, and when slurries denseer (proportion 〉=1.2), proportion are big, insertion will be more shallow, slurries rarer (proportion<1.2), proportion than hour, insertion will be deeply.
D, the enough air compressor machines of selection tolerance
According to practical application, used air compressor machine is generally more than 6 cubes.
Mud balance in e, the suitable adjustment hole
For guaranteeing the effect in clear hole, should suitably adjust mud in the hole, when mud in the hole compares thickness (proportion is greater than 1.2), must near the hole, dig a little mud sump, be used to dilute mud.When mud in the hole too during thickness when above (mud balance about 1.3), must the thin up hole in mud, a part of thickness mud of suitably draining.When mud in the hole rarer (proportion less than 1.2 time), just can utilize sediment at the bottom of the anti-loop cleaning of the gaslift hole, in the mud circulation process, must in time remove clod or coarse granule caking in the screen cloth, prevent that sediment from importing in the hole once more.
The good effect that the present invention obtains is as follows:
Fast, the clear hole time of scarfing cinder speed of the present invention is short, scarfing cinder is totally thorough, and is applicable to scarfing cinder at the bottom of the hole of various holing with slurry wall protection castinplace piles, compares with traditional scarfing cinder technology, can improve 3~5 times of clear hole speed; Improved owing to the thorough drawback that can not give full play to of the end resistance that causes of the interior sediment of cleaning hole of the clear hole of tradition technology, helped guaranteeing pile foundation quality; Mud use amount, discharge value significantly reduce, and have reduced mud contamination, help protecting environment, have saved a large amount of soils and water resource; Used hole cleaning device of the present invention and fitting operation are simple, practical, and equipment and materials is easy to get, and is cheap, and technical matters is convenient.
Description of drawings
What Fig. 1 provided is used device and the scheme of installation of the present invention when mud in the hole compares thickness (proportion is greater than 1.2).
Fig. 2 provides is used device and the scheme of installation of the present invention when mud in the hole rarer (proportion is less than 1.2).
The implication of number in the figure representative is:
1, air compressor machine 2, high-pressure rubber pipe 3, steel conduit 4, elbow 5, slag slurry discharge pipe 6, mud pit 7, backflow mud ditch 8, pore 9, reinforcing cage 10, boring 11, steel casing 12, filter residue screen cloth.
The specific embodiment
Following examples are used to illustrate the present invention.
Embodiment
With the diameter is 1000mm, and the long 40m stake of stake is an example, utilizes its sequence of construction of the present invention to be: 1, measuring stake position; 2, rig is in place; 3, bury the aperture casing underground; 4, boring; 5, lay reinforcing cage; 6, divide into steel conduit (comprising the conduit epimerite); 7, lay air compressor machine; 8, divide into high-pressure rubber pipe; 9, high-pressure rubber pipe is connected with air compressor machine; 10, open air compressor machine, the anti-clear hole of circulating of gaslift; 11, fluid concrete pile.Details are as follows for specific implementation process:
Through measuring the position of determining stake, rig begins in place, and buries casing in the hole underground, and ready the beginning constructed.Adopt the drill bit of Φ 1000mm, the rig pore-forming.When underground water level higher, or the stratum is when easily collapsing the stratum, should prepare high-quality stabilizing solution in advance, specifically make with swell soil, caustic soda and cellulose, its proportion is not less than 1.1, viscosity is not less than 20 seconds, sand factor is not more than 2%, and in time adds in pore forming process in the boring, to stablize hole wall, stablize liquid level in the hole and be no less than 1.0 meters, or enter and be no less than 1.0 meters more than the mouth at the bottom of the casing and control to exceed groundwater table.
When boring finish conform to quality requirements after, in boring, lay reinforcing cage, divide into steel conduit, the conduit epimerite is installed, mud balance in the measured hole, divide into high-pressure rubber pipe according to mud balance in the hole, after putting well under the high-pressure rubber pipe, connect sebific duct and air compressor machine, open air compressor machine, carry out the clear hole of the anti-circulation of gaslift, at the bottom of the measured hole sediment qualified after, carry out the concrete spouting pile.
Claims (4)
1. the clear hole construction method of the anti-circulation of holing with slurry wall protection castinplace pile gaslift is characterized in that: may further comprise the steps:
(1) in reinforcing cage, divides into steel conduit according to stake footpath size;
(2) top is installed at the top of steel conduit and has the conduit epimerite that sebific duct inserts mouth;
(3) mud balance in the measured hole determines that according to mud balance high-pressure rubber pipe inserts the length in the steel conduit;
(4) in steel conduit, insert the high-pressure rubber pipe that the bottom has pore;
(5) high-pressure rubber pipe is connected with air compressor machine;
(6) open air compressor machine and carry out the gaslift reverse circulation cutting cleaning.
2. by the described job practices of claim 1, it is characterized in that: the insertion depth of high-pressure rubber pipe is by the decision of the slurry specific gravity in the hole, slurry specific gravity 〉=1.2 o'clock, and high-pressure rubber pipe inserts more shallow, slurry specific gravity<1.2 o'clock, high-pressure rubber pipe inserts wants dark.
3. by claim 1 or 2 described job practicess, it is characterized in that: it is 1/2~2/3 of steel conduit length that high-pressure rubber pipe inserts the steel conduit degree of depth.
4. by the described job practices of claim 1, it is characterized in that: mud thickness relatively in the hole, proportion be greater than 1.2 o'clock, dig a little mud sump that is used to dilute mud near the hole; Mud thickness too in the hole, when mud balance 1.3 is above, should first thin up hole in mud, a part of thickness mud of suitably draining; Mud is rarer in the hole, and proportion is less than 1.2 o'clock, directly utilizes sediment at the bottom of the anti-loop cleaning of the gaslift hole.
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CNA2007100621929A CN101109179A (en) | 2007-06-21 | 2007-06-21 | Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile |
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CNA2007100621929A CN101109179A (en) | 2007-06-21 | 2007-06-21 | Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile |
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Cited By (26)
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CN101851919A (en) * | 2010-05-31 | 2010-10-06 | 中铁十八局集团有限公司 | Extra-deep hole drilling and fast slag tapping construction method |
CN102352742A (en) * | 2011-07-26 | 2012-02-15 | 中国海洋石油总公司 | Method for returning and sampling polymer solution in bottom hole |
CN102359128A (en) * | 2011-11-01 | 2012-02-22 | 中国建筑第八工程局有限公司 | Rock entry judging method for pile foundation |
CN102400664A (en) * | 2011-09-03 | 2012-04-04 | 中煤科工集团西安研究院 | Well completion process method for increasing gas production of ground horizontally butted well of soft coal stratum |
CN102465536A (en) * | 2010-11-12 | 2012-05-23 | 石峰 | Construction process for cleaning holes in groove section of anti-seepage wall by air-lift method |
CN102493435A (en) * | 2011-12-23 | 2012-06-13 | 上海港务工程公司 | Boring and trenching gas lift reverse circulation residue discharging method |
CN102561947A (en) * | 2012-02-17 | 2012-07-11 | 中国水利水电第十工程局有限公司 | Vibroflotation lead hole construction method based on pneumatic drill slag stirring |
CN102587862A (en) * | 2011-01-14 | 2012-07-18 | 乌兰察布新奥气化采煤技术有限公司 | Method for dredging drill hole for underground coal gasification by using compressed air |
CN103197035A (en) * | 2013-03-27 | 2013-07-10 | 上海市机械施工有限公司 | Method for judging effect of removing slag from pile bottom |
CN103195074A (en) * | 2013-03-27 | 2013-07-10 | 上海市机械施工有限公司 | Bottom cleaning method of pile foundation |
CN103696417A (en) * | 2013-12-20 | 2014-04-02 | 中国一冶集团有限公司 | Secondary hole cleaning device and method of bottom of cast-in-situ bored pile |
CN104153352A (en) * | 2014-07-31 | 2014-11-19 | 广西科技大学 | Karst geology rotary-drilling bored concrete pile hole forming process |
CN104775436A (en) * | 2015-04-27 | 2015-07-15 | 上海山顺土木工程技术有限公司 | Slurry suction device, cast-in-place pile system and slurry suction process |
CN105937376A (en) * | 2016-06-08 | 2016-09-14 | 深圳市宏业基基础工程有限公司 | Hole clearing system for drilling construction pile |
CN105952408A (en) * | 2016-06-16 | 2016-09-21 | 中国建筑第六工程局有限公司 | Device for salvaging percussion bit based on pile hole and using method thereof |
CN106400805A (en) * | 2016-09-06 | 2017-02-15 | 中交第航务工程局有限公司 | Construction method for pile bottom hole cleaning of pile foundation construction |
CN106939595A (en) * | 2017-02-14 | 2017-07-11 | 中建二局第三建筑工程有限公司 | A kind of rotary digging bottom-enlarging filling pile construction technology |
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 |
CN108590515A (en) * | 2018-05-09 | 2018-09-28 | 上海元易勘测设计有限公司 | High viscosity thick fill stratum forming hole method |
CN108867627A (en) * | 2018-08-01 | 2018-11-23 | 绵阳鼎飞益电子科技有限公司 | A kind of construction method convenient for transmission of electricity stake disassembly |
CN110159186A (en) * | 2019-05-24 | 2019-08-23 | 中国建筑第五工程局有限公司 | Slurry drilled pile drilling construction method |
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2007
- 2007-06-21 CN CNA2007100621929A patent/CN101109179A/en active Pending
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CN101851919A (en) * | 2010-05-31 | 2010-10-06 | 中铁十八局集团有限公司 | Extra-deep hole drilling and fast slag tapping construction method |
CN102465536A (en) * | 2010-11-12 | 2012-05-23 | 石峰 | Construction process for cleaning holes in groove section of anti-seepage wall by air-lift method |
CN102587862A (en) * | 2011-01-14 | 2012-07-18 | 乌兰察布新奥气化采煤技术有限公司 | Method for dredging drill hole for underground coal gasification by using compressed air |
CN102587862B (en) * | 2011-01-14 | 2015-12-16 | 乌兰察布新奥气化采煤技术有限公司 | Utilize compressed air to the method for dredging drill hole for underground coal gasification |
CN102352742A (en) * | 2011-07-26 | 2012-02-15 | 中国海洋石油总公司 | Method for returning and sampling polymer solution in bottom hole |
CN102400664B (en) * | 2011-09-03 | 2012-12-26 | 中煤科工集团西安研究院 | Well completion process method for increasing gas production of ground horizontally butted well of soft coal stratum |
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CN102493435A (en) * | 2011-12-23 | 2012-06-13 | 上海港务工程公司 | Boring and trenching gas lift reverse circulation residue discharging method |
CN102561947A (en) * | 2012-02-17 | 2012-07-11 | 中国水利水电第十工程局有限公司 | Vibroflotation lead hole construction method based on pneumatic drill slag stirring |
CN102561947B (en) * | 2012-02-17 | 2013-11-06 | 中国水利水电第十工程局有限公司 | Vibroflotation lead hole construction method based on pneumatic drill slag stirring |
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CN103696417A (en) * | 2013-12-20 | 2014-04-02 | 中国一冶集团有限公司 | Secondary hole cleaning device and method of bottom of cast-in-situ bored pile |
CN103696417B (en) * | 2013-12-20 | 2016-01-06 | 中国一冶集团有限公司 | Secondary pile hole cleaning device and method bottom a kind of bored pile |
CN104153352A (en) * | 2014-07-31 | 2014-11-19 | 广西科技大学 | Karst geology rotary-drilling bored concrete pile hole forming process |
CN104775436A (en) * | 2015-04-27 | 2015-07-15 | 上海山顺土木工程技术有限公司 | Slurry suction device, cast-in-place pile system and slurry suction process |
CN105937376A (en) * | 2016-06-08 | 2016-09-14 | 深圳市宏业基基础工程有限公司 | Hole clearing system for drilling construction pile |
CN105952408A (en) * | 2016-06-16 | 2016-09-21 | 中国建筑第六工程局有限公司 | Device for salvaging percussion bit based on pile hole and using method thereof |
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CN106939595A (en) * | 2017-02-14 | 2017-07-11 | 中建二局第三建筑工程有限公司 | A kind of rotary digging bottom-enlarging filling pile construction technology |
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 |
CN108590515A (en) * | 2018-05-09 | 2018-09-28 | 上海元易勘测设计有限公司 | High viscosity thick fill stratum forming hole method |
CN108867627A (en) * | 2018-08-01 | 2018-11-23 | 绵阳鼎飞益电子科技有限公司 | A kind of construction method convenient for transmission of electricity stake disassembly |
CN110159186A (en) * | 2019-05-24 | 2019-08-23 | 中国建筑第五工程局有限公司 | Slurry drilled pile drilling construction method |
CN113236160A (en) * | 2021-05-25 | 2021-08-10 | 深圳市工勘岩土集团有限公司 | Gas-lift reverse circulation secondary hole cleaning slurry circulation system for large-diameter ultra-deep pile |
CN113340655A (en) * | 2021-07-09 | 2021-09-03 | 中电建路桥集团有限公司 | Exploration hole sampling device and control method |
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 |
CN114508314A (en) * | 2022-01-05 | 2022-05-17 | 中煤江南建设发展集团有限公司 | Recycling method of drilling mud |
CN114887514A (en) * | 2022-05-17 | 2022-08-12 | 山东交通学院 | Slurry preparation equipment and slurry treatment process in hole forming of reverse circulation drilling machine |
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