CN202215256U - Reinforcing structure for fine sand layer of tunnel - Google Patents
Reinforcing structure for fine sand layer of tunnel Download PDFInfo
- Publication number
- CN202215256U CN202215256U CN2011203600042U CN201120360004U CN202215256U CN 202215256 U CN202215256 U CN 202215256U CN 2011203600042 U CN2011203600042 U CN 2011203600042U CN 201120360004 U CN201120360004 U CN 201120360004U CN 202215256 U CN202215256 U CN 202215256U
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- tunnel
- reinforcing structure
- fine sand
- sand layer
- footstep
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- Expired - Fee Related
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a reinforcing structure for a tunnel and specifically relates to the reinforcing structure for a fine sand layer of the tunnel. The reinforcing structure is used for solving the problems that the situations such as rear cavity, early deformation of shoring, even collapse, and the like, caused by quicksand and sand-gushing phenomena still occur during a digging process because a traditional grouting reinforcing technology adopted in a present tunnel has no cementation effect on a dry and compact fine sand layer. The reinforcing structure comprises a middle footstep and a lower footstep located in the tunnel, wherein tunnel outlines corresponding to the middle footstep and the lower footstep are both provided with rotary jetting pile layers which are tangent with the tunnel outlines and are occluded with each other. The reinforcing structure for the fine sand layer of the tunnel is reasonable and reliable in structural design, the problem of the quicksand and sand-gushing phenomena is prevented, the labor intensity is relieved while the work efficiency is greatly increased, the construction quality and safety are easily ensured, and the reinforcing structure has the advantages of simple structure, convenience in operation and low cost.
Description
Technical field
The utility model relates to the ruggedized construction in tunnel, is specially a kind of tunnel fine sand layer ruggedized construction.
Background technology
Along with the fast development of the present high-speed railway of China, highway, tunnel construction certainly will will pass through various poor stratas, as pass through the xeraphium fine sand stratum that has no self-stable ability.This fine sand layer is dry, closely knit, be loose structure, receives to present quicksand at once and gush the sand state after the excavation disturbance, promptly goes out the formation accumulation body in the short time, has no blocking time.In the closely knit powder fine sand stratum, adopt traditional working measures such as grouting and reinforcing influenced by the slurries indiffusion, can't play the effect of glued layer of sand.
Summary of the invention
The traditional grouting reinforcement technique of employing can't play cementation to dry, closely knit fine sand layer to the utility model in the existing tunnel in order to solve; Cause and quicksand still can take place in the digging process and gush back cavity, the preliminary bracing large deformation that the sand phenomenon causes even the problem of situation such as cave in, a kind of tunnel fine sand layer ruggedized construction is provided.
The utility model is to adopt following technical scheme to realize: tunnel fine sand layer ruggedized construction; Comprise the step that is arranged in the tunnel and get out of a predicament or an embarrassing situation, be equipped with the rotary churning pile layer of and mutual interlock tangent on middle step and the corresponding tunnel contour line of getting out of a predicament or an embarrassing situation with outline line.Adopt the oblique rotary churning pile layer of solid matter and interlock to form barrier, the fine sand layer partition with the excavation outline line outside plays the generation that prevents to occur quicksand in the excavation supporting process and gush the sand accident.
The utility model reasonable in design is reliable, avoids quicksand and gushes the problem that the sand phenomenon takes place, and work efficiency significantly improves when reducing labor intensity, and construction quality and safety are easy to guarantee to have advantage simple in structure, easy to operate and that cost is low.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: step among the 1-, 2-gets out of a predicament or an embarrassing situation, 3-rotary churning pile layer.
The specific embodiment
Tunnel fine sand layer ruggedized construction comprises the step 1 that is arranged in the tunnel and gets out of a predicament or an embarrassing situation 2, is equipped with the rotary churning pile layer 3 of and mutual interlock tangent with outline line on the tunnel contour line of the middle step 1 and 2 correspondences of getting out of a predicament or an embarrassing situation.In the practical implementation process, according to the thickness and the first length and the mileage scope of confirming oblique jet grouting pile construction of length of bench on powder fine sand stratum; Then with corollary equipment each steps in the tunnel such as rig, grouting pump, mixers in place after, begin oblique jet grouting pile construction; After the rotary churning pile strengthening construction is accomplished this mileage section is carried out the excavation supporting construction, treat to go again after this section excavation supporting is accomplished the oblique rotary churning pile of construction, so analogize, carry out cycle operation.
Claims (1)
1. tunnel fine sand layer ruggedized construction; Comprise the step (1) that is arranged in the tunnel and get out of a predicament or an embarrassing situation (2), it is characterized in that: the rotary churning pile layer (3) that is equipped with and mutual interlock tangent on the tunnel contour line of the middle step (1) and (2) correspondence of getting out of a predicament or an embarrassing situation with outline line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203600042U CN202215256U (en) | 2011-09-23 | 2011-09-23 | Reinforcing structure for fine sand layer of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203600042U CN202215256U (en) | 2011-09-23 | 2011-09-23 | Reinforcing structure for fine sand layer of tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215256U true CN202215256U (en) | 2012-05-09 |
Family
ID=46014516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203600042U Expired - Fee Related CN202215256U (en) | 2011-09-23 | 2011-09-23 | Reinforcing structure for fine sand layer of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215256U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650210A (en) * | 2012-05-11 | 2012-08-29 | 中铁十二局集团有限公司 | Method for constructing tunnel with low-half cross section being dry powder and fine sand layers |
| CN102720505A (en) * | 2012-06-20 | 2012-10-10 | 中铁十二局集团有限公司 | Excavation method of tunnel having upper semi-section consisting of dry fine sand layer |
| CN107956484A (en) * | 2017-11-24 | 2018-04-24 | 中铁十局集团城市轨道交通工程有限公司 | The ruggedized construction and construction method of existing shield tunnel Deformation control |
-
2011
- 2011-09-23 CN CN2011203600042U patent/CN202215256U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650210A (en) * | 2012-05-11 | 2012-08-29 | 中铁十二局集团有限公司 | Method for constructing tunnel with low-half cross section being dry powder and fine sand layers |
| CN102650210B (en) * | 2012-05-11 | 2014-07-09 | 中铁十二局集团有限公司 | Method for constructing tunnel with low-half cross section being dry powder and fine sand layers |
| CN102720505A (en) * | 2012-06-20 | 2012-10-10 | 中铁十二局集团有限公司 | Excavation method of tunnel having upper semi-section consisting of dry fine sand layer |
| CN107956484A (en) * | 2017-11-24 | 2018-04-24 | 中铁十局集团城市轨道交通工程有限公司 | The ruggedized construction and construction method of existing shield tunnel Deformation control |
| CN107956484B (en) * | 2017-11-24 | 2019-08-27 | 中铁十局集团城市轨道交通工程有限公司 | The ruggedized construction and construction method of existing shield tunnel Deformation control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20190923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |