CN201407051Y - Karst formation pile hole wall protection structure - Google Patents
Karst formation pile hole wall protection structure Download PDFInfo
- Publication number
- CN201407051Y CN201407051Y CN2009200799470U CN200920079947U CN201407051Y CN 201407051 Y CN201407051 Y CN 201407051Y CN 2009200799470 U CN2009200799470 U CN 2009200799470U CN 200920079947 U CN200920079947 U CN 200920079947U CN 201407051 Y CN201407051 Y CN 201407051Y
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- hole
- karst
- wall
- stake
- pile holes
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Abstract
The utility model discloses a karst formation pile hole wall protection structure, aiming to effectively strengthen the stability of the hole wall and improve the construction efficiency of a diggingpile. A pile hole is composed of pile hole segments (10) which are dug in section, the hole wall of the pile hole segment (10) is fixedly provided with a block steel moulding plate (22) to form a sealcoat, the surface of the block steel moulding plate (22) is provided with preformed holes which are distributed in intervals on the circumferential direction and the longitudinal direction, squeezingholes (12) are drilled from the performed holes towards an unstable karst unconsolidated formation (11), grouting pipes (21) are installed in the squeezing holes (12), and grout which is filled through the grouting pipes (21) can integrally consolidate the unstable karst unconsolidated formation (11) after diffusing and solidifying.
Description
Technical field
The utility model relates to the pile holes protecting wall structure of pile foundation construction, particularly a kind of hole digging pile pile holes protecting wall structure that is applied to the karst strata pile foundation construction.
Background technology
Karst (karst) stratum, mainly form by solubility rocks such as limestone, dolomite, gypsum, rock salt, because of be subjected to erosion, the corrosion of water throughout the year, form lapies, fluid bowl, solution cavity, structural belt, tomography, funnel, uvala, the hole that leaks gradually, even underground underground river passage etc. is arranged.Karst strata pile foundation construction difficulty is big, and common construction problem has the hole of collapsing, spillage, bit freezing, bury drills, leakage concrete etc., has a strong impact on pile foundation construction quality and safety.Must fully understand the geology and the hydrologic condition in place before the construction, the multianalysis complex geological condition is to the influence of engineering construction, and performs various processing prediction schemes in constructure scheme and construction organization, can guarantee that just construction carries out smoothly.
The karst strata hole digging pile is mostly taked the method construction of excavation section by section, segmentation retaining wall, to guarantee handling safety.Its idiographic flow is: position, a smooth place → stake setting-out → well head excavates → builds well head concrete guard ring → excavation first segment stake hole → formwork, builds the first segment breast wall concrete → inspections stake (center) axis, absolute altitude → installations lifting means → excavation second a joint stake hole → tear first segment dado template, second a joint template → build the second joint breast wall concrete → inspection (center) axis open, absolute altitude → successively down cycle operation extremely designs an end absolute altitude.Pile holes protecting wall is configured to the concrete guard wall that segmentation is built, and the steadiness of stake hole hole wall is poor, easily caves in, and has serious construction safety hidden danger.
The utility model content
The technical problems to be solved in the utility model provides a kind of structure of karst strata pile holes protecting wall, can strengthen the hole wall steadiness effectively, and improves the efficiency of construction of hole digging pile.
The technical scheme that its technical problem that solves the utility model adopts is: karst strata protection wall of bored pile structure of the present utility model, stake hole sections by excavation section by section forms the stake hole, it is characterized in that: be mounted with the piecemeal steel form on the hole wall of described stake hole sections and form confining bed, at interval circumferential on the piecemeal steel form plate face, longitudinal separation is distributed with preformed hole, be drilled with the mud jacking hole and Grouting Pipe is installed within it in unstable karst scall by preformed hole, the cement grout that is injected by the Grouting Pipe pressurization is one in diffusion with after solidifying with unstable karst scall is fixed.
The beneficial effects of the utility model are, the cement grout that is pressed into is moulded quicksand, sand clay, sand, powder fine sand, stream that unstable scall that shape clay, mud etc. constitutes is fixed to be one, can strengthen the hole wall steadiness effectively, solve the construction difficult problem that karst strata pile foundation construction hole wall easily caves in; Can improve the efficiency of construction of hole digging pile effectively, and guarantee safety, can be widely used in pile foundation constructions such as karst area railway, highway, building construction, harbour.
Description of drawings
This manual comprises following five width of cloth accompanying drawings:
Fig. 1 is the longitudinal section schematic diagram of structure of karst strata pile holes protecting wall;
Fig. 2 is the sectional view along A-A line among Fig. 1;
Fig. 3 is the sectional view along B-B line among Fig. 1;
Fig. 4 is the set-up mode schematic diagram of Grouting Pipe in the structure of karst strata pile holes protecting wall;
Fig. 5 is the structural representation of Grouting Pipe in the structure of karst strata pile holes protecting wall.
Component shown in the figure, toponym and institute are corresponding underlined: stake hole sections 10, unstable karst scall 11, mud jacking hole 12, concrete guard ring 20, Grouting Pipe 21, excessive slurry hole 21a, convex shoulder 21b, thread segment 21c, piecemeal steel form 22.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to Fig. 1, structure of karst strata pile holes protecting wall of the present utility model, stake hole sections 10 by excavation section by section forms the stake hole, be mounted with piecemeal steel form 22 on the hole wall of described stake hole sections 10 and form confining bed, at interval circumferential on the piecemeal steel form 22 plate faces, longitudinal separation is distributed with preformed hole, in unstable karst scall 11, be drilled with mud jacking hole 12 and Grouting Pipe 21 is installed within it by preformed hole, the cement grout that is injected by Grouting Pipe 21 pressurization is after diffusion and solidifying, with quicksand, the sand clay, sand, the powder fine sand, stream is moulded the shape clay, unstable scall that mud etc. constitute 11 is fixed to be one, can strengthen the hole wall steadiness effectively, solve the construction difficult problem that karst strata pile foundation construction hole wall easily caves in.With respect to the existing concrete guard wall structure that passes through whole stake hole, can improve the efficiency of construction of hole digging pile effectively, help reducing the construction cost of pile foundation, and guarantee safety.The utility model can be widely used in pile foundation constructions such as karst area railway, highway, building construction, harbour.
With reference to Fig. 2 and Fig. 3, as preferred embodiment a kind of, described mud jacking hole 12 is extended in unstable karst scall 11 along the stake aperture by the hole wall of stake hole sections 10.Described mud jacking hole 12 in a row is provided with along the longitudinal separation of stake hole sections 10 hole walls, and adjacent two rows' mud jacking hole 12 is staggeredly located and is the plum blossom shape.With reference to Fig. 1, the piecemeal steel form 22 that is installed on the hole wall of hole sections 10 forms confining bed, can guarantee that mud jacking is not toward external leakage.With reference to Fig. 1, be the safety of guaranteeing to construct, the top in described stake hole is provided with concrete guard ring 20.
Shown in Fig. 5 is the concrete structure of Grouting Pipe 21.The front end of Grouting Pipe 21 is cone-shaped, and the rear portion is provided with convex shoulder 21b, and in order to the sleeve pipe jacking, convex shoulder 21b can be formed by the φ 8mm reinforcing bar of circumferential hoop around Grouting Pipe 21 and welding with it.Its anterior longitudinal separation, circumferentially interlace and offering the slurry hole 21a that overflows, the rear end then has the thread segment 21c that can be connected with filling system output ball valve.
Some principles of the above the utility model structure of karst strata pile holes protecting wall that just explains through diagrams, be not be the utility model to be confined to shown in and in described concrete structure and the scope of application, so every the corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (6)
1. structure of karst strata pile holes protecting wall, stake hole sections (10) by excavation section by section forms the stake hole, it is characterized in that: be mounted with piecemeal steel form (22) on the hole wall of described stake hole sections (10) and form confining bed, circumferentially interval, longitudinal separation are distributed with preformed hole on piecemeal steel form (22) the plate face, be drilled with mud jacking hole (12) and Grouting Pipe (21) is installed within it in unstable karst scall (11) by preformed hole, the cement grout that is injected by Grouting Pipe (21) pressurization is one in diffusion with after solidifying with unstable karst scall (11) is fixed.
2. structure of karst strata pile holes protecting wall as claimed in claim 1 is characterized in that: described mud jacking hole (12) by the hole wall of stake hole sections (10) along the stake aperture in unstable karst scall (11), extending.
3. structure of karst strata pile holes protecting wall as claimed in claim 2 is characterized in that: described mud jacking hole (12) in a row is provided with along the longitudinal separation of stake hole sections (10) hole wall.
4. structure of karst strata pile holes protecting wall as claimed in claim 3 is characterized in that: in the described mud jacking hole (12) that sets in a row, adjacent two rows' mud jacking hole (12) is staggeredly located.
5. structure of karst strata pile holes protecting wall as claimed in claim 1 is characterized in that: the top in described stake hole is provided with concrete guard ring (20).
6. structure of karst strata pile holes protecting wall as claimed in claim 1, it is characterized in that: the front end of described Grouting Pipe (21) is cone-shaped, its anterior longitudinal separation, circumferentially interlace and offering the slurry hole (21a) of overflowing, the rear portion is provided with convex shoulder (21b), and the rear end then has thread segment (21c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200799470U CN201407051Y (en) | 2009-04-01 | 2009-04-01 | Karst formation pile hole wall protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200799470U CN201407051Y (en) | 2009-04-01 | 2009-04-01 | Karst formation pile hole wall protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407051Y true CN201407051Y (en) | 2010-02-17 |
Family
ID=41677984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200799470U Expired - Lifetime CN201407051Y (en) | 2009-04-01 | 2009-04-01 | Karst formation pile hole wall protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201407051Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852140A (en) * | 2012-10-10 | 2013-01-02 | 东华理工大学 | Curtain type cave filling pile construction method and elastic mesh cloth |
| CN104563147A (en) * | 2014-08-29 | 2015-04-29 | 上海市政工程设计研究总院（集团）有限公司 | Composite structure pile foundation applied to karst area and construction method of composite structure pile foundation |
| CN105927231A (en) * | 2016-05-24 | 2016-09-07 | 中国矿业大学 | Cyclic induction curtain grouting method for inclined shaft to penetrate through water-enriched compact quicksand stratum |
-
2009
- 2009-04-01 CN CN2009200799470U patent/CN201407051Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852140A (en) * | 2012-10-10 | 2013-01-02 | 东华理工大学 | Curtain type cave filling pile construction method and elastic mesh cloth |
| CN102852140B (en) * | 2012-10-10 | 2014-12-03 | 东华理工大学 | Curtain type cave filling pile construction method and elastic mesh cloth |
| CN104563147A (en) * | 2014-08-29 | 2015-04-29 | 上海市政工程设计研究总院（集团）有限公司 | Composite structure pile foundation applied to karst area and construction method of composite structure pile foundation |
| CN105927231A (en) * | 2016-05-24 | 2016-09-07 | 中国矿业大学 | Cyclic induction curtain grouting method for inclined shaft to penetrate through water-enriched compact quicksand stratum |
| CN105927231B (en) * | 2016-05-24 | 2018-06-29 | 中国矿业大学 | Inclined shaft passes through rich water densification drifting sand layer circulation-induced curtain-grouting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100217 Effective date of abandoning: 20090401 |