CN206736650U - A kind of road structure of deep-lying karst area water sealing consolidation - Google Patents
A kind of road structure of deep-lying karst area water sealing consolidation Download PDFInfo
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- CN206736650U CN206736650U CN201720415387.6U CN201720415387U CN206736650U CN 206736650 U CN206736650 U CN 206736650U CN 201720415387 U CN201720415387 U CN 201720415387U CN 206736650 U CN206736650 U CN 206736650U
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- slurries
- solution cavity
- road structure
- prestressed
- lying
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Abstract
The utility model discloses a kind of road structure of deep-lying karst area water sealing consolidation, and it mainly includes：Roadbed (1), concrete cast-in-place slab (2), drilling (3), slurries radiation area (4), current (5), prestressing force longeron (6), solution cavity (7), isolated footing (8), prestressed cross beams (9), Grouting Pipe (12), slurries radiating aperture (13)；The utility model is first isolated current (5) with solution cavity (7) by slurries radiation area (4) using curtain grouting technology, to prevent the development of solution cavity；Then the pressure that roadbed region is used for supporting roadbed (1) to be applied on concrete cast-in-place slab (2) using prestressing force longeron (6), prestressed cross beams (9) above solution cavity (7), while provide support force by isolated footing (8) for prestressed girder；The utility model can effectively punish depth and be more than 10m large-scale solution cavity, while can effectively separate current, prevent the development of solution cavity, ensure the stability of road structure, and construction is simple, economic and reliable, have broad application prospects.
Description
Technical field
The road engineering technical field in civil engineering is the utility model is related to, particularly with regard to a kind of deep-lying karst area
The road structure of water sealing consolidation.
Background technology
In road project, some karst regions are inevitably passed through, solution cavity is one of karst region most typically harm,
Construction to road causes serious threat；Collapsing for solution cavity will cause property to damage to engineering that is built or building
Lose, or even injure personal safety, huge negative effect is caused to society, karst collapse has become karst area and mainly pacified
One of full hidden danger.The formation of solution cavity is the result that the erosion for the water received for a long time by limestone is formed, and limestone is in water and titanium dioxide
It is soluble in water that calcium bicarbonate is generated in the presence of carbon, then solution cavity forms and constantly develops and expand.Traditional solution cavity administers skill
Art mainly has：Slip casting, rockfill, pile foundation etc., slurry injection technique is only applicable to small-sized solution cavity, and carrying out slip casting expense to large-scale solution cavity holds high
It is expensive, and technical operation is complicated；The Treating technology that rockfills is only applicable to shallow solution cavity, and for deeper solution cavity, digging process is cumbersome, and
Workload is huge, and certain destruction is caused to local environment；Pile foundation as a kind of conventional punishment solution cavity technology, its
Technical requirements are higher, and pile foundation position can not efficiently be laid, while with continuous erosion of the current to solution cavity, gesture
The development of solution cavity must be caused to expand, original pile foundation can not effectively maintain the long-time stability of road structure.
The content of the invention
For problem above, the utility model discloses a kind of road structure of deep-lying karst area water sealing consolidation：Should
Road structure mainly includes roadbed, concrete cast-in-place slab, drilling, slurries radiation area, current, prestressing force longeron, solution cavity, independent base
Plinth, prestressed cross beams, Grouting Pipe, slurries radiating aperture；Wherein, described prestressed cross beams and prestressing force longeron are interlaced, are in
Sphere of movements for the elephants shape is laid, and prestressed girder both ends are connected with isolated footing；Concrete cast-in-place slab is between prestressed girder and roadbed.
The road structure of described a kind of deep-lying karst area water sealing consolidation, it is characterised in that described drilling is located at
Between current and solution cavity, slurries radiation area is formed to surrounding jet groutinl by slurries radiating aperture from Grouting Pipe.
The road structure of described a kind of deep-lying karst area water sealing consolidation, it is characterised in that described concrete shows
Pour plate and prestressed girder and concrete strength that isolated footing uses is C30, described bore diameter D=100mm, Grouting Pipe
Diameter D=30mm, slurries radiation area radius R=1.5m, for the slip casting initial pressure used for 1 ~ 3MPa, final grouting pressure is 6 ~ 8MPa.
A kind of road structure of described deep-lying karst area water sealing consolidation, it is characterised in that described curtain-grouting
Material uses Portland cement list slurries, double slurries and chemical pulp, is aided with superfine cement and the double slurries of waterglass, the ratio of mud
W:C=0.6:1~0.8:1, while add a certain amount of additive（Waterproofing agent, accelerator, swelling agent etc.）, according under different condition
Performance requirement, adjust the various performance indications of slurries.
The utility model beneficial effect：The long-term steady of road structure can not only effectively be ensured using above road structure
It is qualitative, and the development again of solution cavity can also be prevented, release threat of the solution cavity to road project；The utility model uses
Plate-beam-isolated footing is structure as a whole, and the power that road surface is applied to roadbed dexterously disperses, to each isolated footing, to ensure
Solution cavity is not disturbed by external force；Prestressing force longeron and prestressed cross beams intersect, common to support cast in place concrete plate to apply
Pressure, it is and simple in construction using prestressed girder, save material, installation is simple；The utility model is in current and solution cavity simultaneously
Between use curtain grouting technology, erosion of the cut-off current to solution cavity, saved grouting cost and working procedure；Can efficiently,
Accurately administer the harm of karst region.
Brief description of the drawings
Fig. 1 is the road structure schematic diagram of the utility model specific implementation process
Fig. 2 is the plan of the utility model road structure
Fig. 3 is the utility model slip casting procedure structure schematic diagram
Fig. 4 is the utility model bored grouting process chart
Description of reference numerals：1. roadbed, 2. concrete cast-in-place slabs, 3. drillings, 4. slurries radiation areas, 5. current, 6.
Prestressing force longeron, 7. solution cavities, 8. isolated footings, 9. prestressed cross beams, 10. steel pipes, 11. sandstones, 12. Grouting Pipes, 13.
Slurries radiating aperture.
Embodiment
The utility model road structure and implementation steps are described further below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of road structure of deep-lying karst area water sealing consolidation of the utility model, the road
Based structures include roadbed (1), concrete cast-in-place slab (2), drilling (3), slurries radiation area (4), current (5), prestressing force longeron
(6), solution cavity (7), isolated footing (8), prestressed cross beams (9), steel pipe (10), sandstone (11), Grouting Pipe (12), slurries radiating aperture
(13)；Wherein described prestressed cross beams (9) and prestressing force longeron (6) are interlaced, are laid in sphere of movements for the elephants shape, on prestressed girder
Face casting concrete Bars In Poured Concrete Slab (2), holding power is provided for prestressed girder by isolated footing (8)；Slurries in Grouting Pipe (12) lead to
Cross slurries radiating aperture (13) to spray to surrounding, form slurries radiating aperture (13)；Described curtain grouting technology uses Fig. 4 Cementers
Skill.
1st, in road construction project or Road Detection project, first using high-density electric, geological radar technology, hole
The advanced detection techniques such as interior acoustic CT technology, determine the particular location and size of solution cavity (7), while determine the position of current (5)
And flow direction.
2nd, after the particular location for determining solution cavity (7) and current (5), using curtain grouting technology in current (5) and solution cavity (7)
Between drilled (3), drilling (3) in Grouting Pipe (12) by slurry material by slurries radiating aperture (13) to surrounding spray,
Form slurries radiation area (4), isolation current (5).
3rd, the bored grouting equipment that uses as shown in figure 3, grouting process as shown in figure 4, slip casting initial pressure for 1 ~ 3MPa,
Final grouting pressure is 6 ~ 8MPa, first note single liquid cement mortar, note dual slurry afterwards, whole process runs through and using chemical pulp works as slip casting, if
When effect is not up to actual requirement, supplement slip casting should be carried out to its region, reach anti-, draining requirement.
4th, roadbed (1) region above solution cavity (7) is cleared up, and is flattened, is compacted, prestressed cross beams (9) is laid and in advance should
Power longeron (6) so that prestressed girder is interlaced, is laid in sphere of movements for the elephants shape, depth below is buried at prestressed girder both ends
Isolated footing (8), prestressed cross beams (9) and prestressing force longeron (6) are connected with each other with basic (8).
5th, prestressed material is marched into the arena first, resetted, counterdie is installed in the position laid in advance, according to the spy of component load-bearing
Point assembling reinforcement, and bellows is installed, prestressed cross beams (9) reinforcing bar and longeron (6) reinforcing bar are interlaced, in sphere of movements for the elephants shape cloth
If then, longeron horizontal to prestressing force together carries out casting concrete, and conserved, prestressed stretch-draw is finally carried out, before tensioning
Carry out anchorage inspection, equipment calibration and check concrete quality, after the completion of prestressed stretch-draw, slurry seal, sealing off and covering anchorage are carried out to duct.
6 and then in prestressed cross beams (9) and prestressing force longeron (6) top laying concrete cast-in-place slab (2), and to coagulation
Native Bars In Poured Concrete Slab (2) carries out maintenance processing, illustrates that part is not prior art known to those skilled in the art in detail herein.
Claims (3)
1. the road structure of a kind of deep-lying karst area water sealing consolidation, it is characterised in that the road structure mainly includes：Roadbed
(1), concrete cast-in-place slab (2), drilling (3), slurries radiation area (4), current (5), prestressing force longeron (6), solution cavity (7), independence
Basic (8), prestressed cross beams (9), Grouting Pipe (12), slurries radiating aperture (13)；Wherein, described prestressed cross beams (9) and pre-
Stress longeron (6) is interlaced, is laid in sphere of movements for the elephants shape, prestressed girder both ends are connected with isolated footing (8)；Concrete cast-in-situ
Plate (2) is located between prestressed girder and roadbed (1).
2. the road structure of a kind of deep-lying karst area water sealing consolidation according to claim 1, it is characterised in that described
Drilling (3) be located between current (5) and solution cavity (7), from Grouting Pipe (12) by slurries radiating aperture (13) to surrounding spray note
Slurry forms slurries radiation area (4).
3. the road structure of a kind of deep-lying karst area water sealing consolidation according to claim 1, it is characterised in that described
Concrete cast-in-place slab (2) and the concrete strength that uses of prestressed girder and isolated footing (8) for C30, the drilling (3) of use
Diameter D=100mm, Grouting Pipe (12) diameter D=30mm, slurries radiation area (4) radius R=1.5m, the slip casting initial pressure used for
1 ~ 3MPa, final grouting pressure are 6 ~ 8MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720415387.6U CN206736650U (en) | 2017-04-20 | 2017-04-20 | A kind of road structure of deep-lying karst area water sealing consolidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720415387.6U CN206736650U (en) | 2017-04-20 | 2017-04-20 | A kind of road structure of deep-lying karst area water sealing consolidation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206736650U true CN206736650U (en) | 2017-12-12 |
Family
ID=60560397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720415387.6U Expired - Fee Related CN206736650U (en) | 2017-04-20 | 2017-04-20 | A kind of road structure of deep-lying karst area water sealing consolidation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206736650U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917331A (en) * | 2017-04-20 | 2017-07-04 | 长沙理工大学 | The road structure and its construction method of a kind of deep-lying karst area water sealing consolidation |
| CN113174929A (en) * | 2021-05-08 | 2021-07-27 | 中铁上海设计院集团有限公司 | Karst building foundation composite reinforcement method under flowing water condition |
-
2017
- 2017-04-20 CN CN201720415387.6U patent/CN206736650U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917331A (en) * | 2017-04-20 | 2017-07-04 | 长沙理工大学 | The road structure and its construction method of a kind of deep-lying karst area water sealing consolidation |
| CN106917331B (en) * | 2017-04-20 | 2020-04-07 | 长沙理工大学 | Water-stopping reinforced roadbed structure for deep-buried karst region and construction method thereof |
| CN113174929A (en) * | 2021-05-08 | 2021-07-27 | 中铁上海设计院集团有限公司 | Karst building foundation composite reinforcement method under flowing water condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20180420 |