Shield receiving construction method and receiving tunnel door water stop device
A construction method and technology of shield tunneling, which are applied in vertical shaft equipment, earthwork drilling, wellbore lining, etc., can solve problems such as shortening construction period, gushing water and sand, etc.
Active Publication Date: 2020-10-27
CHINA RAILWAY 11TH BUREAU GRP +1
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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
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[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...
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The invention provides a shield receiving construction method and a receiving tunnel door water stop device. According to the construction method, before a tunnel door is broken, polyurethane is injected around a soil bin of a shield machine at a receiving end by adopting a deep-hole conduit grouting mode, a water flow channel around a shield body is subjected to double-slurry blocking by adoptinga WSS deep-hole grouting mode, then a high-performance high-quality polyurethane is injected through middle shield and shield tail radial holes of the shield machine to block a water source around the shield body, and a pressure relief hole is drilled on a side wall of the tunnel door to drain a water source of a ground connecting wall and a station main maintenance structure gap; a tunnel door sealing device is installed for shield receiving after the tunnel door is broken; and the tunnel door sealing device comprises a pre-embedded tunnel door ring, an external tunnel door ring, a magneticsealing component and two cord fabric rubber plates, the magnetic sealing component is arranged on the pre-embedded tunnel door ring, and the two cord fabric rubber plates are arranged on the externaltunnel door ring. The shield receiving construction method and the receiving hole door water stop device solve the problem of water inrush and sand inrush during shield receiving caused by unsatisfactory end reinforcement and even failure in a high water pressure water-rich sand stratum.
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
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Patent Timeline
Login to View More 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