CN104452767A - Waste slurry processing and construction technology for drilled pile in karst area - Google Patents
Waste slurry processing and construction technology for drilled pile in karst area Download PDFInfo
- Publication number
- CN104452767A CN104452767A CN201410540307.0A CN201410540307A CN104452767A CN 104452767 A CN104452767 A CN 104452767A CN 201410540307 A CN201410540307 A CN 201410540307A CN 104452767 A CN104452767 A CN 104452767A
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- CN
- China
- Prior art keywords
- slurry
- mixed
- drilled pile
- cement
- construction
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
Abstract
A waste slurry processing and construction technology for a drilled pile in a karst area comprises a drilling hole forming working procedure, a raw slurry modulation working procedure, a mixed slurry modulation working procedure, and a slurry pressing working procedure. A geological drilling rig is adopted to construct a grouting hole, and a slurry pump is adopted to pump filtered waste slurry to a slurry mixing pool, water is added into the slurry mixing pool, and raw slurry of mixed slurry liquid is prepared, and the raw slurry is pumped to be placed in a stirring barrel on an electronic scale. Cement, bentonite, land plaster and additives are sequentially added in the stirring barrel to prepare the mixed slurry liquid according to the weight ratio of the slurry to the cement to the bentonite to the land plaster to the additives of 4:1:0.3:0.1:0.05; a grouting device is adopted to inject the mixed slurry liquid into the grouting hole until injection cannot be carried out. The technology has the advantages of being simple in construction method and convenient to operate. The waste slurry of the drilled pile in the karst area can be processed efficiently in an environmentally-friendly manner, meanwhile, the high-strength slurry formed by the waste slurry is utilized for achieving the aim that a karst cave is filled with the slurry, and therefore safety of construction of the drilled pile and structural construction is improved.
Description
Technical field
The present invention relates to a kind of karst area drilled pile useless slurry process construction technology.
Background technology
As everyone knows, a large amount of lava stratum is there is in Southwestern China some areas, karst strata comprises economic and safety two aspects to the impact that drilled pile construction brings, as the economic loss that the spillage collapse hole in pore forming process, the super side of concrete will cause, the subsiding suddenly of the solution cavity security risk that will rig be caused to topple, drop etc.
In addition, Municipal Engineering Projects often has that construction plant is narrow and small, civilized construction requirement high, according to drilled pile pile-formation process, by producing a large amount of useless slurries, needs to process in time.
At present, the common method of useless slurry process has the mode such as airing method, mud outward transport.Airing method needs larger construction plant, and in urban district, project does not often satisfy the requirements; Mud tank car outward transport construction cost is higher, and economic benefit is undesirable.
Summary of the invention
Its object of the present invention is just to provide a kind of karst area drilled pile useless slurry process construction technology, have that construction method is simple, the feature of convenient operation, can environmental protection, process the useless slurry of the drilled pile of karst area efficiently, simultaneously, useless slurry is utilized again to form the slurry with intensity, reach the object of filling solution cavity, and then improve the safety of drilled pile construction and structure construction.
Realize above-mentioned purpose and the technical scheme taked, comprise step
1) survey data prompting according to ground, the region of solution cavity may be there is, adopt geological drilling rig construction injected hole;
2) adopt slush pump through the screen pack of mesh 2.8mm, after filtration, useless slurry is evacuated to pond with slurry, in pond with slurry, adds water, be mixed with the former mud of mixed serum;
3) former mud is extracted in the slurry mixing tank be placed on electronic scale;
4) in slurry mixing tank according to weight ratio: mud: cement: swell soil: land plaster: Admixture is the match ratio of 4:1:0.3:0.1:0.05, add cement, swell soil, land plaster, Admixture, be mixed with mixed serum, mixed serum mixing time is no less than 5min, the mixed serum resting period of having stirred, be no more than 3h;
5) adopt biliquid twin-tub slurry filling machine to carry out slip casting, initial grouting pressure 0.7 ~ 1.0MPa, injects mixed serum in injected hole, till cannot injecting.
Compared with prior art the present invention has the following advantages.
1) construction method of the present invention is simple, and workable, the facility of use and equipment are comparatively common;
2) substantially reduce the difficulty of mud conditioning, neither need airing, affect civilized construction, do not need again mud to transport outward, increase project cost;
3) mixed serum configured, has some strength, plays consolidation effect to Karst Cave Formation, can improve bearing capacity of foundation soil, helpful to safe construction drilled pile and agent structure.
Detailed description of the invention
This technique comprises step
1) survey data prompting according to ground, the region of solution cavity may be there is, adopt geological drilling rig construction injected hole;
2) adopt slush pump through the screen pack of mesh 2.8mm, after filtration, useless slurry is evacuated to pond with slurry, in pond with slurry, adds water, be mixed with the former mud of mixed serum;
3) former mud is extracted in the slurry mixing tank be placed on electronic scale;
4) in slurry mixing tank according to weight ratio: mud: cement: swell soil: land plaster: Admixture is the match ratio of 4:1:0.3:0.1:0.05, add cement, swell soil, land plaster, Admixture, be mixed with mixed serum, mixed serum mixing time is no less than 5min, the mixed serum resting period of having stirred, be no more than 3h;
5) adopt biliquid twin-tub slurry filling machine to carry out slip casting, initial grouting pressure 0.7 ~ 1.0MPa, injects mixed serum in injected hole, till cannot injecting.
Described former mud balance is 1.25, and viscosity is 18s; Grade of cement is PO42.5; Swell soil is sodium bentonite; Gypsum powder; Admixture is sodium lignin sulfonate water reducer.
Embodiment
Construction method of the present invention, be utilize in percussive drill pore forming process the waste and old mud produced, become mixed serum with cement, Admixture according to match ratio mixing of the present invention, by slurry filling machine, slurries are filled to karst region, after grout cures, there is certain intensity.
Construction:
A, to survey data prompting according to ground, the region of solution cavity may be there is, adopting geological drilling rig construction injected hole;
Useless slurry is evacuated to pond with slurry by b, employing slush pump, when extracting useless slurry, and necessary screen pack, the residue of bulk and aggregate chips as the magma of mixed serum, can not add appropriate water, are mixed with the former mud of mixed serum in pond with slurry;
C, former mud to be extracted in the slurry mixing tank be placed on electronic scale;
D, in slurry mixing tank according to match ratio, add cement, Admixture, be mixed with mixed serum;
Mixed serum injects in injected hole, till cannot injecting by e, employing mud jacking equipment.
The feature of the mixed serum used in useless slurry process engineering method in the present invention is:
The mixing ratio by weight of a, mixed serum, mud: cement: swell soil: land plaster: Admixture is 4:1:0.3:0.1:0.05.
Clay mortar before b, participation preparation, mud balance is 1.25, and viscosity is 18s; Cement model is PO42.5; Admixture is sodium lignin sulfonate water reducer.
C, prepared after slurries, proportion is 1.36 ~ 1.40, and viscosity is 19s ~ 21s, and has two features: one is initial set in 4 hours, and two is that 3d intensity reaches about 0.3MPa.
Claims (2)
1. a karst area drilled pile useless slurry process construction technology, is characterized in that, comprise step:
1) survey data prompting according to ground, the region of solution cavity may be there is, adopt geological drilling rig construction injected hole;
2) adopt slush pump through the screen pack of mesh 2.8mm, after filtration, useless slurry is evacuated to pond with slurry, in pond with slurry, adds water, be mixed with the former mud of mixed serum;
3) former mud is extracted in the slurry mixing tank be placed on electronic scale;
4) in slurry mixing tank according to weight ratio: mud: cement: swell soil: land plaster: Admixture is the match ratio of 4:1:0.3:0.1:0.05, add cement, swell soil, land plaster, Admixture, be mixed with mixed serum, mixed serum mixing time is no less than 5min, the mixed serum resting period of having stirred, be no more than 3h;
5) adopt biliquid twin-tub slurry filling machine to carry out slip casting, initial grouting pressure 0.7 ~ 1.0MPa, injects mixed serum in injected hole, till cannot injecting.
2. a kind of karst area according to claim 1 drilled pile useless slurry process construction technology, it is characterized in that, described former mud balance is 1.25, and viscosity is 18s; Grade of cement is PO42.5; Swell soil is sodium bentonite; Gypsum powder; Admixture is sodium lignin sulfonate water reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540307.0A CN104452767A (en) | 2014-10-14 | 2014-10-14 | Waste slurry processing and construction technology for drilled pile in karst area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540307.0A CN104452767A (en) | 2014-10-14 | 2014-10-14 | Waste slurry processing and construction technology for drilled pile in karst area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104452767A true CN104452767A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410540307.0A Pending CN104452767A (en) | 2014-10-14 | 2014-10-14 | Waste slurry processing and construction technology for drilled pile in karst area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104452767A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887904A (en) * | 2016-04-19 | 2016-08-24 | 中铁建大桥工程局集团第四工程有限公司 | Construction method for filling dissolving cavity in outer side of deep foundation pit in karst area |
| CN105887890A (en) * | 2016-04-14 | 2016-08-24 | 广州市鲁班建筑集团股份有限公司 | Plastic pile, construction method of plastic pile and foundation pit supporting watertight seal structure |
| CN111997624A (en) * | 2020-08-18 | 2020-11-27 | 中交二公局第三工程有限公司 | Shallow-buried large-section underground excavation rectangular tunnel construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209422A (en) * | 1997-08-21 | 1999-03-03 | 北京市高水矿山工程与材料研究所 | Inorganic solidified grouting material |
| CN101215463A (en) * | 2008-01-17 | 2008-07-09 | 中国矿业大学 | Drilling hole sealing material |
| US7422061B2 (en) * | 2005-11-07 | 2008-09-09 | Calfrac Well Services Ltd. | Fluid loss additives and methods |
| CN102617092A (en) * | 2012-04-18 | 2012-08-01 | 长沙理工大学 | Controllable clay and cement seepage-proof reinforcement paste |
| CN102660952A (en) * | 2012-05-30 | 2012-09-12 | 湖南宏禹水利水电岩土工程有限公司 | Controllable clay paste slurry grouting technique |
-
2014
- 2014-10-14 CN CN201410540307.0A patent/CN104452767A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209422A (en) * | 1997-08-21 | 1999-03-03 | 北京市高水矿山工程与材料研究所 | Inorganic solidified grouting material |
| US7422061B2 (en) * | 2005-11-07 | 2008-09-09 | Calfrac Well Services Ltd. | Fluid loss additives and methods |
| CN101215463A (en) * | 2008-01-17 | 2008-07-09 | 中国矿业大学 | Drilling hole sealing material |
| CN102617092A (en) * | 2012-04-18 | 2012-08-01 | 长沙理工大学 | Controllable clay and cement seepage-proof reinforcement paste |
| CN102660952A (en) * | 2012-05-30 | 2012-09-12 | 湖南宏禹水利水电岩土工程有限公司 | Controllable clay paste slurry grouting technique |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887890A (en) * | 2016-04-14 | 2016-08-24 | 广州市鲁班建筑集团股份有限公司 | Plastic pile, construction method of plastic pile and foundation pit supporting watertight seal structure |
| CN105887904A (en) * | 2016-04-19 | 2016-08-24 | 中铁建大桥工程局集团第四工程有限公司 | Construction method for filling dissolving cavity in outer side of deep foundation pit in karst area |
| CN111997624A (en) * | 2020-08-18 | 2020-11-27 | 中交二公局第三工程有限公司 | Shallow-buried large-section underground excavation rectangular tunnel construction method |
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Application publication date: 20150325 |