Protection structure for preventing ground heave caused by tunnel grouting reinforcement
A technology of grouting reinforcement and protective structure, which is applied in the direction of tunnel, tunnel lining, soil protection, etc., to achieve the effect of convenient mechanized operation, simple method, and improvement of integrity and bearing capacity
Pending Publication Date: 2019-08-13
HENAN POLYTECHNIC UNIV
View PDF0 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a protective structure for preventing surface uplift caused by tunnel grouting reinforcement and a tunnel advance grouting method, which can effectively solve the problem of preventing surface uplift caused by grouting reinforcement. The problem
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0036] Such as Figure 1-4 As shown, the present invention is a protective structure for preventing surface uplift caused by tunnel grouting reinforcement. The curved arch 5, the reverse curved arch 5 is in the shape of a downward convex arch, and a supporting structure is arranged on the top side of the inner contour of the tunnel body 8, and the top side surrounding the inner contour of the tunnel body is on the outside of the supporting structure A forward arch 11 formed by drilling and grouting is provided, and the forward arch 11 is in an upwardly convex arch shape. The forward arch 11, the reverse arch 5 and the support structure jointly form a The combined support structure caused by slurry to uplift the ground surface.
[0037] In order to ensure the use effect, the support structure is the anchor support 13 inst...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a protection structure for preventing ground heave caused by tunnel grouting reinforcement. According to the technical scheme, the protection structure includes a tunnel bodylocated below a stratum surface, a reversed arch formed by ground grouting is arranged in stratum over the tunnel body, the reversed arch is shaped like a downward-raised arch, a supporting structureis arranged on a top slope of the inner contour of the tunnel body and surrounds the top slope of the inner contour of the tunnel body, a forward arch formed by hole grouting is arranged on the outerside of the supporting structure, and the forward arch is shaped like an upward-raised arch. According to the protection structure, a stress carrier is formed jointly through multi-layer multiple grouting and by combining multiple passive support modes, reversed arch and positive arch structures are successively formed, the stress distribution states of loose rock and soil layers such as loose rock layers and loose sand oil layers around a tunnel are changed, so high-pressure grouting can be formed through protection of the reversed arch under the situation that the surrounding environment androck and soil property are not mastered very accurately.
Description
technical field [0001] The invention belongs to the technical field of geotechnical engineering and civil engineering, in particular to a protective structure for preventing surface uplift caused by tunnel grouting reinforcement. It is suitable for permanent tunnel (lane) projects where shallow buried tunnels (lanes) pass through loose rock layers and sandy soil layers, and advance grouting reinforcement is likely to cause a series of problems such as surface uplift, road cracks, and building inclinations. Background technique [0002] With the development of economic globalization and the acceleration of urbanization, subway engineering has increasingly become the main direction of urban public transportation development. The subway not only enhances the quickness of travel and saves people's time, but also plays a good role in promoting the development of urban environmental protection. Our country is in a period of accelerated industrialization and urbanization. Millions...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00E21D11/10E21D11/15E21D11/18E21D20/00E02D3/12
CPCE21D11/003E21D9/001E21D11/10E21D11/18E21D11/152E21D20/00E02D3/12E02D2250/003Y02E10/20
Inventor 王树仁张纪云李春柳龚健王新宇许来斌
Owner HENAN POLYTECHNIC UNIV