CN109518677A - Punching Borehole Cast-in-place Concrete Pile karst cave treatment method - Google Patents
Punching Borehole Cast-in-place Concrete Pile karst cave treatment method Download PDFInfo
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- CN109518677A CN109518677A CN201811416710.7A CN201811416710A CN109518677A CN 109518677 A CN109518677 A CN 109518677A CN 201811416710 A CN201811416710 A CN 201811416710A CN 109518677 A CN109518677 A CN 109518677A
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- slabstone
- punching
- solution cavity
- place concrete
- treatment method
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- 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
- E02D15/06—Placing concrete under water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of Punching Borehole Cast-in-place Concrete Pile karst cave treatment method, it is that the treatment measures without filling solution cavity geology are encountered in concrete pouring of punched hole piles, characterized by the following steps: a, drilled as holes is impacted with Spiral digging machine, b, slabstone soil cement is stirred, c, solution cavity build wall, d, prepare cement slurry again, e, drilled as holes is impacted to designed elevation with Spiral digging machine, f, borehole cleaning, g, decentralization steel reinforcement cage, h, underwater concreting.Punching Borehole Cast-in-place Concrete Pile karst cave treatment method of the invention is easy with construction technology, technological measure is safe, strong operability, and construction quality is safe and reliable, it is ensured that the advantages of pile foundation is smoothly implemented, and guarantees pile quality, reduces engineering cost, obtain good economic benefit.
Description
Technical field
The present invention relates to a kind of karst cave treatment methods, specifically, being a kind of Punching Borehole Cast-in-place Concrete Pile karst cave treatment method.
Background technique
Solution cavity geology is weathered the underground space formed by soluble limestone, because lime rock stratum hardness is harder, building
Engineering pile foundation construction generallys use cast-in-situ bored pile technique and constructs, and when encountering without filling solution cavity situation, generallys use
Top setting steel pile casting is gone along with sb. to guard him, and solution cavity is directly filled with concrete by impact holing to designed elevation, when engineering pile pile,
Concrete is caused largely to waste, cost severely exceeds.During concrete pouring of punched hole piles, when encounter without filling cavern geology feelings
When condition, slurry coat method can be leaked into quickly in solution cavity, and the soil layer for causing top that punching is completed is lost mud formation collapse hole, in turn
Stake holes surrounding soil is caused to collapse to form construction safety problem, the molded quality of pile of surrounding is affected, and punching pile can not be after
The problems such as continuous construction.
Therefore the treatment measures without filling solution cavity geology are encountered in known concrete pouring of punched hole piles, and there is above-mentioned various
Inconvenient and problem.
Summary of the invention
The purpose of the present invention is to propose a kind of safe and reliable Punching Borehole Cast-in-place Concrete Pile karst cave treatment method.
To achieve the above object, the technical solution of the invention is as follows:
A kind of Punching Borehole Cast-in-place Concrete Pile karst cave treatment method is to encounter the processing without filling solution cavity geology in concrete pouring of punched hole piles to arrange
It applies, it is characterised in that the following steps are included:
A, drilled as holes is impacted with Spiral digging machine
Retaining wall should be carried out using mud with when Spiral digging machine impact drill drilling construction, using block stamp punching, when encountering lime rock stratum
Block stamp stroke is improved, impact energy is increased, stops punching when impact is to solution cavity layer；
B, slabstone soil cement is stirred
Slabstone, cohesive soil, cement are mixed uniform according to 1m3:3m3:500kg ratio with excavator, mixing process is appropriate
Watering forms dry slabstone soil cement；
C, solution cavity builds wall
The good slabstone soil cement of mixing is poured into solution cavity with excavator, forms taper filling heap to solution cavity or more；Again with rotation
The small stroke of the 0.5m of digging machine impacts slabstone soil cement, makes to backfill object dense extrusion；
D, cement slurry is prepared again
Again it preparing in the mud injection stake holes of specific gravity > 1.2 or more, slime water head height stands 4 hours in level of ground water 1m,
It waits the initial set of slabstone soil cement to form entirety and has intensity；
E, drilled as holes is impacted to designed elevation with Spiral digging machine
Persistently the slabstone soil cement of backfill is rushed in using the small stroke of the 1m of Spiral digging machine, up through solution cavity layer, solution cavity layer
Under if you need to continue impinging earth strata, can be improved stroke punching until reach designed elevation；When solution cavity is larger, nothing is rushed in primary backfill
Method is formed completely build wall in the case of, can repeated multiple times backfill slabstone soil cement, initial set after carry out punched hole construction；
F, borehole cleaning
After impact drilled as holes meets whole hole condition, stop rushing in, cyclic permutation is carried out with the mud of specific gravity > 1.25, in cleaning hole
Residue；
G, steel reinforcement cage is transferred
The reinforcing bar cage hoisting made is put into the stake holes that cleaning is completed with the corollary equipment of Punching Borehole Cast-in-place Concrete Pile, and is fixed；
H, underwater concreting
Concrete is imported into stake holes with diameter 250mm perfusion conduit, conduit is not more than 0.3m away from bottom hole, continuous pouring concrete,
Until extracting steel pile casting simultaneously beyond stake top absolute altitude 0.5m.
Punching Borehole Cast-in-place Concrete Pile karst cave treatment method of the invention can also be further achieved by the following technical measures.
Method above-mentioned, wherein the clay layer is impermeable stratum.
Method above-mentioned, wherein mud balance > 1.2.
Method above-mentioned, wherein the maximum particle diameter of the slabstone is 30cm.
Method above-mentioned, wherein described cohesive soil is loose dry ground.
Method above-mentioned, wherein the cement uses the fast hydraulic cement of PC32.5R.
After adopting the above technical scheme, Punching Borehole Cast-in-place Concrete Pile karst cave treatment method of the invention has the advantage that
1, construction technology is easy, technological measure is safe, strong operability；
2, construction quality is safe and reliable, it is ensured that pile foundation is smoothly implemented, and guarantees pile quality；
3, engineering cost is reduced, good economic benefit is obtained.
Detailed description of the invention
Fig. 1 uses Spiral digging machine impact drill drilling construction schematic diagram for the embodiment of the present invention；
Fig. 2 pours into slabstone soil cement construction schematic diagram with excavator for the embodiment of the present invention in impact drilled as holes；
Fig. 3 carries out impact drill drilling construction signal in the slabstone soil cement of backfill with Spiral digging machine again for the embodiment of the present invention
Figure；
Fig. 4 is that the slabstone soil cement impact drilled as holes again with Spiral digging machine in backfill of the embodiment of the present invention reaches designed elevation
Construction schematic diagram.
In figure: 1 Spiral digging machine, 2 plain fill layers, 3 clay layers, 4 lime rock stratums, 5 without filling solution cavity, 6 lime rock stratums, 7 steel shield
Cylinder, 8 slabstone soil cements, 9 excavators, 10 slurry coat methods, 11 designed elevations.
Specific embodiment
With reference to embodiments and its attached drawing further explains the present invention.
Embodiment 1
The process flow of Punching Borehole Cast-in-place Concrete Pile karst cave treatment method of the invention of the invention: setting wall thickness 5mm steel pile casting-impact at
Hole (impact to solution cavity layer)-stirring slabstone soil cement-solution cavity builds wall-and prepares (the impact to design of cement slurry-impact holing again
Absolute altitude)-borehole cleaning-decentralization steel reinforcement cage-pours underwater concrete.
Punching Borehole Cast-in-place Concrete Pile karst cave treatment method of the invention is to be encountered in concrete pouring of punched hole piles without filling solution cavity geology
Treatment measures, no filling cavern geologic structure are followed successively by plain fill layer 2 from top to bottom, clay layer 3, and 4 layers of limestone, no filling
Solution cavity 5, lime rock stratum 6, karst cave treatment method the following steps are included:
Referring now to Fig. 1, Fig. 1 uses Spiral digging machine impact drill drilling construction schematic diagram for the embodiment of the present invention.
A, mud balance > 1.2 should impact holing (impact to solution cavity layer): be used when using 1 impact drill drilling construction of Spiral digging machine
Mud carry out retaining wall, using block stamp punching, block stamp stroke is improved when encountering lime rock stratum 6, increases impact energy, impact is to molten
Stop punching when hole layer 5.
B, it stirs slabstone soil cement: being carried out slabstone, cohesive soil, cement according to 1m3:3m3:500kg ratio with excavator
It mixes uniform, mixing process is suitably sprinkled water, and dry slabstone soil cement is formed；Slabstone uses maximum particle diameter 30cm slabstone, viscosity
Soil is loose dry ground, and cement uses the fast hydraulic cement of PC32.5R.Fig. 2 is being drilled to excavator in impact for the embodiment of the present invention
Slabstone soil cement construction schematic diagram is poured into hole.
C, solution cavity builds wall: pouring into solution cavity the good slabstone soil cement of mixing with excavator, forms taper and fill heap to molten
More than hole, slabstone soil cement is impacted with the small stroke of 0.5m, makes to backfill object dense extrusion.
D, cement slurry is prepared again: is prepared in the mud injection stake holes of specific gravity > 1.2 or more again, slime water head is above Ground
Lower water level 1m stands 4 hours, waits the initial set of slabstone soil cement to form entirety and has intensity.
E, impact holing (impact to designed elevation): persistently the slabstone soil cement of backfill is rushed using the small stroke of 1m
Into, up through solution cavity layer, if you need to continue impinging earth strata under solution cavity layer, can be improved stroke punching until reach designed elevation；When
When solution cavity is larger, primary backfill is rushed in the case of can not being formed completely and building wall, can repeated multiple times backfill slabstone soil cement, after initial set
It is punched out construction.Fig. 3 is that the slabstone soil cement again with Spiral digging machine in backfill of the embodiment of the present invention carries out impact drilled as holes
Construction schematic diagram.
F, borehole cleaning: after punching meets whole hole condition, stopping rushing in, and carries out cyclic permutation with the mud of specific gravity > 1.25, removes
Residue in hole.
G, it transfers steel reinforcement cage: the reinforcing bar cage hoisting made being put into the stake holes that cleaning is completed with wherein equipment, and solid
It sets；Fig. 4 is that the slabstone soil cement impact drilled as holes again with Spiral digging machine in backfill of the embodiment of the present invention reaches designed elevation
Construction schematic diagram.
H, underwater concreting: concrete is imported into stake holes with diameter 250mm perfusion conduit, conduit is not more than away from bottom hole
0.3m, continuous pouring concrete, until extracting steel pile casting simultaneously beyond stake top absolute altitude 0.5m.
The present invention have substantive distinguishing features and significant technological progress, Punching Borehole Cast-in-place Concrete Pile karst cave treatment method of the invention,
Construction technology is easy, and significant effect is low in cost, it is ensured that pile foundation is smoothly implemented, and guarantees pile quality, obtains good economic effect
Benefit.
Punching Borehole Cast-in-place Concrete Pile karst cave treatment method of the invention is in the urbanization infrastructure construction of Jiangxi Province Pingxiang City Shangli County
It is used in PPP projects, when construction carries out using low in cost, construction technology is easy, significant effect, has obtained implementing single
Position, supervisor and owner's abundant affirmation.
Above embodiments are used for illustrative purposes only, rather than limitation of the present invention, the technology people in relation to technical field
Member, without departing from the spirit and scope of the present invention, can also make various transformation or variation.Therefore, all equivalent
Technical solution also should belong to scope of the invention, should be limited by each claim.
Claims (6)
1. a kind of Punching Borehole Cast-in-place Concrete Pile karst cave treatment method is to encounter the processing without filling solution cavity geology in concrete pouring of punched hole piles to arrange
It applies, it is characterised in that the following steps are included:
A, drilled as holes is impacted with Spiral digging machine
Retaining wall should be carried out using mud with when Spiral digging machine impact drill drilling construction, using block stamp punching, when encountering lime rock stratum
Block stamp stroke is improved, impact energy is increased, stops punching when impact is to solution cavity layer；
B, slabstone soil cement is stirred
Slabstone, cohesive soil, cement are mixed uniform according to 1m3:3m3:500kg ratio with excavator, mixing process is appropriate
Watering forms dry slabstone soil cement；
C, solution cavity builds wall
The good slabstone soil cement of mixing is poured into solution cavity with excavator, forms taper filling heap to solution cavity or more；Again with rotation
The small stroke of the 0.5m of digging machine impacts slabstone soil cement, makes to backfill object dense extrusion；
D, cement slurry is prepared again
Again it preparing in the mud injection stake holes of specific gravity > 1.2 or more, slime water head height stands 4 hours in level of ground water 1m,
It waits the initial set of slabstone soil cement to form entirety and has intensity；
E, drilled as holes is impacted to designed elevation with Spiral digging machine
Persistently the slabstone soil cement of backfill is rushed in using the small stroke of the 1m of Spiral digging machine, up through solution cavity layer, solution cavity layer
Under if you need to continue impinging earth strata, can be improved stroke punching until reach designed elevation；When solution cavity is larger, nothing is rushed in primary backfill
Method is formed completely build wall in the case of, can repeated multiple times backfill slabstone soil cement, initial set after carry out punched hole construction；
F, borehole cleaning
After impact drilled as holes meets whole hole condition, stop rushing in, cyclic permutation is carried out with the mud of specific gravity > 1.25, in cleaning hole
Residue；
G, steel reinforcement cage is transferred
The reinforcing bar cage hoisting made is put into the stake holes that cleaning is completed with the corollary equipment of Punching Borehole Cast-in-place Concrete Pile, and is fixed；
H, underwater concreting
Concrete is imported into stake holes with diameter 250mm perfusion conduit, conduit is not more than 0.3m away from bottom hole, continuous pouring concrete,
Until extracting steel pile casting simultaneously beyond stake top absolute altitude 0.5m.
2. Punching Borehole Cast-in-place Concrete Pile karst cave treatment method as described in claim 1, which is characterized in that the clay layer is waterproof
Layer.
3. Punching Borehole Cast-in-place Concrete Pile karst cave treatment method as described in claim 1, which is characterized in that mud balance > 1.2.
4. Punching Borehole Cast-in-place Concrete Pile karst cave treatment method as described in claim 1, which is characterized in that the maximum particle diameter of the slabstone is
30cm。
5. Punching Borehole Cast-in-place Concrete Pile karst cave treatment method as described in claim 1, which is characterized in that described cohesive soil is loose dry
Soil.
6. Punching Borehole Cast-in-place Concrete Pile karst cave treatment method as described in claim 1, which is characterized in that the cement uses PC32.5R
Fast hydraulic cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811416710.7A CN109518677A (en) | 2018-11-26 | 2018-11-26 | Punching Borehole Cast-in-place Concrete Pile karst cave treatment method |
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| CN201811416710.7A CN109518677A (en) | 2018-11-26 | 2018-11-26 | Punching Borehole Cast-in-place Concrete Pile karst cave treatment method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185386A (en) * | 2019-06-27 | 2019-08-30 | 四川公路桥梁建设集团有限公司 | Rotary-digging rapid hole forming method for concrete retaining wall of loose accumulation body stratum |
| CN110512594A (en) * | 2019-08-20 | 2019-11-29 | 北京建材地质工程有限公司 | The simple and easy method of churning driven opportunity cavity pore-forming |
| CN110700246A (en) * | 2019-09-27 | 2020-01-17 | 中冶交通建设集团有限公司 | Construction method for cast-in-place pile to penetrate pebble bed |
| CN111561262A (en) * | 2020-05-29 | 2020-08-21 | 贵州建工集团第一建筑工程有限责任公司 | Hole forming method of rotary drilling rig for large-size pile hole in karst area |
| CN114045817A (en) * | 2021-11-24 | 2022-02-15 | 上海宝冶集团有限公司 | Method for treating beaded karst cave in cast-in-place pile construction process |
| CN115341533A (en) * | 2022-08-30 | 2022-11-15 | 中铁九桥工程有限公司 | Drilling construction method for cast-in-place pile in easily collapsed stratum |
| CN118241976A (en) * | 2024-05-29 | 2024-06-25 | 中国矿业大学(北京) | Rotary drilling rig and reinforcement cage distribution integrated equipment and foundation construction method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185386A (en) * | 2019-06-27 | 2019-08-30 | 四川公路桥梁建设集团有限公司 | Rotary-digging rapid hole forming method for concrete retaining wall of loose accumulation body stratum |
| CN110512594A (en) * | 2019-08-20 | 2019-11-29 | 北京建材地质工程有限公司 | The simple and easy method of churning driven opportunity cavity pore-forming |
| CN110700246A (en) * | 2019-09-27 | 2020-01-17 | 中冶交通建设集团有限公司 | Construction method for cast-in-place pile to penetrate pebble bed |
| CN111561262A (en) * | 2020-05-29 | 2020-08-21 | 贵州建工集团第一建筑工程有限责任公司 | Hole forming method of rotary drilling rig for large-size pile hole in karst area |
| CN114045817A (en) * | 2021-11-24 | 2022-02-15 | 上海宝冶集团有限公司 | Method for treating beaded karst cave in cast-in-place pile construction process |
| CN115341533A (en) * | 2022-08-30 | 2022-11-15 | 中铁九桥工程有限公司 | Drilling construction method for cast-in-place pile in easily collapsed stratum |
| CN115341533B (en) * | 2022-08-30 | 2023-08-11 | 中铁九桥工程有限公司 | Drilling construction method for easy-collapse stratum cast-in-situ pile |
| CN118241976A (en) * | 2024-05-29 | 2024-06-25 | 中国矿业大学(北京) | Rotary drilling rig and reinforcement cage distribution integrated equipment and foundation construction method |
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Application publication date: 20190326 |