A construction method for receiving a shield tunnel and a water-stopping device for a receiving portal
A construction method and shield tunneling technology, which can be applied in vertical shaft equipment, earthwork drilling, wellbore lining, etc., can solve the problems of shortening the construction period, water gushing and sand gushing, etc., and achieve good grouting reinforcement effect and good precipitation effect
Active Publication Date: 2021-11-05
CHINA RAILWAY 11TH BUREAU GRP +1
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Aiming at the problems existing in the prior art, the present invention provides a construction method for receiving shield tunnels and a water-stopping device for receiving portals. As a result, when the shield machine is receiving, the groundwater around the opening at the receiving end is quickly blocked, avoiding problems such as re-coordinating reinforcement and waiting for reinforcement strength to cause delays in the construction period, greatly shortening the construction period, ensuring the sealing effect of the shield receiving opening, and solving The problem of water gushing and sand gushing in shield receiving
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
[0052] The present invention will be further described below in conjunction with drawings and embodiments. attached Figure 1 to Figure 22 The drawings for the embodiments are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the present invention. The following technical solutions shown in the drawings are specific solutions of the embodiments of the present invention, and are not intended to limit the scope of the claimed invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0053] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right" etc. are based on those shown in the accompanying drawings. Orientation...
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 provides a construction method for receiving a shield tunnel and a water-stopping device for a receiving hole. The construction method is to inject polyurethane around the soil bin of the shield machine at the receiving end by means of deep-hole conduit grouting before the hole is broken, and use WSS deep-hole grouting to double-slurry the water flow channel around the shield body. Blocking, and then inject high-performance and high-quality polyurethane through the radial holes of the shield and shield tail of the shield machine to block the water source around the shield, and make pressure relief holes on the side wall of the portal to drain the gap between the wall and the main maintenance structure of the station water source; after the portal is broken, a portal sealing device is installed to receive the shield; the portal sealing device includes a pre-embedded portal ring and an external portal ring, a magnetic sealing member installed on the pre-embedded portal ring and an external Place the two ply rubber plates on the hole door knocker. The invention solves the problem of water gushing and sand gushing when the shield tunnel is receiving due to unsatisfactory or even failure of end reinforcement in high water pressure water-rich sandy strata.
Description
technical field [0001] The invention belongs to the field of shield tunneling, and is mainly aimed at a shield tunnel receiving construction method for a high-pressure water-rich sand layer when the end reinforcement of the high-water-pressure water-rich sand layer fails when the shield machine fails, and a water-stop device for a receiving portal. Background technique [0002] With the rapid development of modern urban construction, large-area mining of underground space to alleviate urban volume and traffic pressure will be an inevitable trend. The shield tunneling method is currently the best underground transportation construction due to its fast construction and little impact on the ground. method. In the shield method subway construction, the shield machine enters the excavation tunnel from the starting hole and carries out excavation construction. After completing the construction of a tunnel in a certain section, while keeping the surrounding soil stable, follow the ...
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 Patents(China)
IPC IPC(8): E21D9/06E21D11/08E21D11/38E21D11/10
CPCE21D11/08E21D11/10E21D11/38E21D9/0609E21D9/0671
Inventor 张志冰谭桂平章罗林彭刚谢强建李杰
Owner CHINA RAILWAY 11TH BUREAU GRP